Working on cars all day means your hands get tired fast. That is where a good air ratchet saves your knuckles and your time. The best air ratchets for mechanics spin fasteners at 160 to 280 RPM, cutting bolt removal time from minutes to seconds. Whether you are pulling an engine apart or doing a quick brake job, the right pneumatic ratchet makes a noticeable difference in your daily workflow.
Our team spent weeks researching what real mechanics, shop technicians, and serious DIYers actually use on the job. We dug through forums like Garage Journal and Reddit’s r/Tools to find honest opinions. We looked at torque ratings, CFM requirements, noise levels, and build quality across dozens of models. What we found is that professional mechanics prioritize torque, durability, and noise control above all else.
In this guide, we break down 8 air ratchets that cover every budget and use case. From the 130 ft-lb powerhouse from AIRCAT to budget-friendly options under $40, each pick earned its spot based on real user feedback and hands-on specs. We also included a buying guide that covers drive sizes, air compressor requirements, and the 72 vs 90 tooth question that confuses so many buyers.
Top 3 Picks for Best Air Ratchets (August 2026)
These three stand out from the pack for different reasons. The AIRCAT 805-HT brings class-leading torque that breaks loose stubborn bolts without a fight. The Ingersoll Rand 109XPA balances power, speed, and durability in a package trusted by thousands of professionals. The Dynamic Power keeps things affordable without sacrificing the core features you need for basic automotive work.
Best Air Ratchets for Mechanics in 2026
| Product | Specifications | Action |
|---|---|---|
 AIRCAT 805-HT 3/8 High Torque |
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 Ingersoll Rand 109XPA 3/8 |
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 AIRCAT 802 Composite Twin Pawl |
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 Ingersoll Rand 170G 3/8 |
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 DEWALT DWMT70776 3/8 |
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 Chicago Pneumatic CP886 3/8 |
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 Dynamic Power 3/8 Reversible |
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 WORKPRO 3/8 Air Ratchet |
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1. AIRCAT 805-HT High Torque Ratchet – 130 ft-lbs of Raw Power
AIRCAT Pneumatic Tools 805-HT High Torque Ratchet Wrench 130 ft-lbs - 3/8-Inch
3/8 inch drive
130 ft-lbs torque
180 RPM
84 dBA
2-year warranty
Pros
- Highest torque in class at 130 ft-lbs
- Patented silencing tech at 84 dBA
- Made in Taiwan quality
- Variable speed trigger
- 2-year warranty
Cons
- Large and heavy for tight spaces
- Can be dangerous if not careful
- Direction switch takes practice
When I first picked up the AIRCAT 805-HT, the torque number that jumped out was 130 ft-lbs. That is nearly double what most 3/8 inch air ratchets deliver. In real shop use, this means the 805-HT breaks loose bolts that would stall a standard ratchet cold. Mechanics on Reddit consistently rank this as one of the most powerful air ratchets you can buy without stepping up to an impact wrench.
The patented Tuned Exhaust System brings noise down to 84 dBA, which is noticeably quieter than most air ratchets in the 90+ dBA range. If you have ever spent a full day in a shop with screaming air tools, you know how much that difference matters for your hearing. AIRCAT backs this tool with a 2-year warranty, which is twice what most competitors offer.
Build quality is where this ratchet really shines. It is manufactured in Taiwan, which users consistently note as a step up from Chinese-made alternatives in fit and finish. The single pawl design has proven reliable over hundreds of reviews, with many users reporting years of daily shop use without issues.
The trade-off is size and weight. At 3.2 pounds and nearly 12.5 inches long, the 805-HT is not the tool you reach for when working inside a tight engine bay. Several users warned that the torque is genuinely powerful enough to cause injury if you are not paying attention. You need two hands for the toughest bolts, and the direction switch takes some getting used to compared to simpler designs.
Who Should Buy the AIRCAT 805-HT
Professional mechanics who need maximum torque for stubborn bolts will love this tool. It is ideal for suspension work, exhaust systems, and any job where rusted or seized fasteners are a regular problem. If you work on trucks or heavy equipment, the 130 ft-lbs of torque means fewer trips to grab an impact wrench.
Who Should Skip It
If your work is mostly in tight engine bays or delicate assemblies, the size and weight of the 805-HT work against you. DIY mechanics doing occasional oil changes and brake jobs may find it overkill. The power also means you need to be careful not to over-tighten or snap smaller fasteners.
2. Ingersoll Rand 109XPA 3/8 Air Ratchet – The Trusted Workhorse
Ingersoll Rand 109XPA 3/8" Drive Air Ratchet Wrench
3/8 inch drive
76 ft-lbs torque
220 RPM
Twin Pawl Plus
3.1 lbs
Pros
- Excellent torque-speed balance
- Twin Pawl Plus head design
- Rotatable exhaust deflector
- Trusted IR build quality
- Great value vs tool truck brands
Cons
- Louder than AIRCAT models
- Air hungry - needs good compressor
- Made in China
The Ingersoll Rand 109XPA is the air ratchet I would recommend if a mechanic asked me for one tool that does everything well. With 76 ft-lbs of torque and 220 RPM, it hits a sweet spot that covers 90 percent of automotive fastener work. Over 1,100 reviews back up its reputation with a 4.7-star average rating and 80 percent five-star ratings.
The exclusive Twin Pawl Plus head design sets this ratchet apart from cheaper alternatives. It distributes wear across two pawls instead of one, which extends the life of the tool significantly. Users report the 109XPA lasting years of daily shop use with basic maintenance. The rotatable exhaust deflector is a small but important feature that directs air away from your face and work area.
In terms of value, the 109XPA delivers professional-grade performance at a fraction of what tool truck brands charge. Multiple reviewers specifically compared it to Snap-on ratchets costing two or three times as much and found the IR holds its own. The forward and reverse control has a wide diameter that is easy to operate even with greasy hands.
The main drawback is air consumption. This ratchet is air hungry, meaning you need a compressor that can keep up. Users with small portable compressors report the tool starving for air during extended use. It is also louder than the AIRCAT models, sitting in the 90s dBA range, so hearing protection is non-negotiable.
Ideal Air Compressor Setup
You will want a compressor rated for at least 4 to 5 CFM at 90 PSI to keep the 109XPA running smoothly during extended jobs. A 20-gallon or larger tank prevents the compressor from cycling constantly during bolt-heavy work like suspension teardowns. Smaller pancake compressors work for short bursts but will struggle with continuous use.
Best Applications for the 109XPA
This ratchet excels at general automotive repair, engine work, and assembly tasks. The 220 RPM free speed makes quick work of running nuts on and off long bolts. It is not the tool for breaking loose rusted suspension bolts, but once they are loose, nothing spins them off faster.
3. AIRCAT 802 Composite Twin Pawl – Best Value Pick
AIRCAT Pneumatic Tools 802: Composite Twin Pawl Ratchet Wrench 70 ft-lbs of Torque - 3/8-Inch
3/8 inch drive
70 ft-lbs torque
280 RPM
82 dBA
Composite body
Pros
- Quietest at 82 dBA
- 280 RPM fast rundown
- Twin pawl durability
- 2-year warranty
- Great value vs premium brands
Cons
- Composite body stains easily
- Bulky for tight spaces
- Runs slower than some newer models
- F/R switch tight initially
The AIRCAT 802 is the quietest air ratchet in our lineup at just 82 dBA. That is remarkable for a tool delivering 70 ft-lbs of torque at 280 RPM. If you work in a shared shop where noise complaints are a real issue, this is the ratchet that keeps the peace without sacrificing performance.
The composite body keeps weight down to 2.8 pounds while the twin pawl mechanism handles durability. AIRCAT designed this as a mid-range option that bridges the gap between budget tools and premium brands. At its price point, users consistently call it the best value air ratchet on the market.
I appreciate the variable speed trigger on the 802, which gives you real control over how fast the socket spins. That control matters when you are threading a bolt and do not want to cross-thread it. The 280 RPM free speed is actually quite fast for rundown, getting bolts seated quickly before you finish them by hand or with a torque wrench.
The composite body does have a downside. Several users noted that it is porous and can absorb oil and grease over time, making it harder to clean than metal-body ratchets. The forward and reverse switch can also feel tight when the tool is new, though it loosens up with use. Some users reported it runs slower than the advertised 280 RPM in real-world conditions.
Noise Comparison with Other Ratchets
At 82 dBA, the AIRCAT 802 is measurably quieter than the Chicago Pneumatic CP886 at 98 dBA and the Ingersoll Rand 109XPA in the 90s range. For context, every 3 dBA increase represents roughly a doubling of perceived noise. This makes the 802 a favorite in shared workshops and residential garages.
Long-Term Durability Notes
The twin pawl mechanism shares the load between two contact points, reducing wear on individual components. With 612 reviews and a 4.6-star average, long-term durability reports are strong. The 2-year warranty provides extra peace of mind that budget brands simply cannot match.
4. Ingersoll Rand 170G 3/8 Air Ratchet – Entry-Level Professional
Ingersoll Rand 170G 3/8" Drive Air Ratchet Wrench
3/8 inch drive
55 ft-lbs torque
170 RPM
Heat-treated head
2.65 lbs
Pros
- Trusted IR quality at lower price
- Heat-treated ratchet head
- Ergonomic grip
- Compact and lightweight
- Ideal for light automotive work
Cons
- Lower torque at 55 ft-lbs
- Slower 170 RPM speed
- Limited to medium-duty work
The Ingersoll Rand 170G is the entry point into professional-grade air ratchets. At 55 ft-lbs of torque and 170 RPM, it does not match the power of the 109XPA or AIRCAT 805-HT, but it carries the same IR build quality at a much lower price. Over 1,000 reviews and a 4.6-star rating confirm it does what it is designed to do reliably.
I would recommend the 170G to mechanics who need a dependable tool for general engine repair and light industrial work. It handles most automotive fasteners without issue. The heat-treated ratchet head extends tool life, and the ergonomic grip keeps your hand comfortable during long sessions.
What you give up with the 170G is raw power and speed. The 55 ft-lb torque rating means this is not the tool for stubborn or rusted bolts. You will need a breaker bar or impact wrench for those situations. The 170 RPM speed is also slower than the 109XPA’s 220 RPM, which adds up over a full day of repetitive fastener work.
For the price, the 170G is hard to beat as a second ratchet or a starter tool for someone building their pneumatic tool collection. Many users keep one in their toolbox as a backup to their primary ratchet. The compact design also makes it a good choice for tighter spaces where larger ratchets will not fit.
How the 170G Compares to the 109XPA
The 109XPA delivers 38 percent more torque and 29 percent more speed than the 170G. If budget allows, the 109XPA is the better long-term investment. However, the 170G covers basic automotive repair needs at roughly half the cost, making it a smart choice for part-time mechanics and serious DIYers.
Best Use Cases
The 170G shines in general engine repair, oil changes, brake jobs, and light assembly work. It struggles with suspension components and exhaust bolts that have been on a vehicle for years. Match the tool to the job, and the 170G will serve you well.
5. DEWALT DWMT70776 3/8 Air Ratchet – Brand Trust on a Budget
DEWALT DWMT70776 3/8 in. Pneumatic Air Ratchet
3/8 inch drive
65 ft-lbs torque
Touch control trigger
Rubber cushion grip
3.05 lbs
Pros
- Excellent value price point
- 65 ft-lbs good torque for price
- Comfortable rubber cushion grip
- Touch control trigger
- DEWALT brand quality
Cons
- Limited review count at 38 reviews
- May be too big for tight spaces
- Newer product less proven
The DEWALT DWMT70776 brings the brand’s reputation for quality tools to the pneumatic ratchet market. At 65 ft-lbs of torque, it sits between the IR 170G and the AIRCAT 802 in terms of power. The rubber cushion grip and touch control trigger are features you typically find on more expensive tools.
I like the touch control trigger, which lets you modulate power based on how hard you press. This is genuinely useful when you are starting a bolt and want to avoid cross-threading. The ergonomic handle with rubber cushioning reduces vibration transfer to your hand, which matters during long work sessions.
The main concern with the DWMT70776 is its limited track record. With only 38 reviews, there is not enough long-term data to judge durability the way we can for the IR or AIRCAT models. That said, 85 percent of reviewers gave it five stars, and the early feedback is positive across the board.
For mechanics who trust the DEWALT name and want a capable air ratchet without spending over $100, this is a reasonable choice. The build quality feels solid in hand, and the features list punches above its price class. Just be aware that you are an early adopter with this particular model.
Is the Limited Review Count a Red Flag
Not necessarily. The DWMT70776 is a newer product, and DEWALT has a strong track record across their pneumatic line. The 85 percent five-star rating among existing buyers is encouraging. However, if you want a tool with thousands of reviews backing its long-term durability, the IR 109XPA or AIRCAT 802 are safer bets.
Grip and Ergonomics Comparison
The rubber cushion grip on the DWMT70776 is one of the most comfortable in this price range. It compares favorably to the AIRCAT 802’s composite handle and the IR 109XPA’s standard grip. If hand comfort during extended use is a priority, this ratchet deserves consideration.
6. Chicago Pneumatic CP886 3/8 Air Ratchet – Lightweight Shop Tool
Chicago Pneumatic CP886 3/8-Inch Drive Standard-Duty Air Ratchet, Red
3/8 inch drive
50 ft-lbs torque
160 RPM
Aluminum housing
3.04 lbs
Pros
- Lightweight aluminum housing
- Good torque for automotive repair
- Compact head for tight spaces
- Hardened gears for durability
- 1/2 inch variant available
Cons
- Gets hot during extended use
- Very noisy at 98 dBA
- Some freezing issues reported
- Expensive repair parts
The Chicago Pneumatic CP886 is a standard-duty air ratchet designed for occasional to moderate shop use. Its aluminum housing keeps weight to 3.04 pounds, and the compact head design fits into spaces where bulkier ratchets cannot go. The torque range of 9.6 to 50.2 ft-lbs covers most automotive assembly and repair tasks.
I found the hardened gears to be a nice touch at this price point. They resist wear better than standard gears, extending the service life of the tool. The easy-grip reverse switch makes directional changes quick and simple, even with oily hands. Chicago Pneumatic also offers a 1/2 inch drive variant for heavier tasks.
The CP886 has some real drawbacks that buyers should know about. It operates at 98.2 dBA, making it one of the loudest ratchets in this lineup. Several users reported the tool getting hot during extended use, and a few experienced freezing issues after several months. Repair parts are also expensive compared to IR or AIRCAT.
With a 4.1-star rating from 64 reviews, the CP886 is the lowest-rated tool in our roundup. It is a capable ratchet for light-duty work, but the noise level and reliability concerns hold it back. If you are on a budget, the Dynamic Power or WORKPRO offer better value. If you want proven reliability, spend a bit more for the IR 170G.
Noise Level Reality Check
At 98.2 dBA, the CP886 is significantly louder than the AIRCAT models at 82 to 84 dBA. Hearing protection is absolutely mandatory with this tool. If you work in a shop where noise is already a problem, the CP886 will not help the situation.
When Lightweight Matters Most
The aluminum housing makes the CP886 easy to maneuver overhead and in awkward positions. If you do a lot of under-dash work or reach up into engine bays from below, the lighter weight reduces arm fatigue. Just plan around the noise and heat issues during longer jobs.
7. Dynamic Power 3/8 Air Ratchet – Budget Champion
Dynamic Power 3/8 inch Professional Air Ratchet Reversible (Green&Black) MAX. TORQUE:45 FT-LBS
3/8 inch drive
45 ft-lbs torque
160 RPM
Reversible
2.6 lbs
Pros
- Excellent value under $30
- 45-50 ft-lbs solid torque
- Well built and durable
- Reversible function
- 919 reviews prove popularity
Cons
- Spits oil when first filled
- Very loud operation
- Not for rusted bolts
- Weaker than pricier tools
The Dynamic Power 3/8 inch air ratchet is the proof that you do not need to spend a fortune to get a functional pneumatic tool. With over 900 reviews and a 4.5-star average, it is one of the most popular budget air ratchets on the market. At its price point, users consistently call it a monster value.
Delivering 45 to 50 ft-lbs of torque at 160 RPM, the Dynamic Power handles most automotive repair tasks you throw at it. The reversible function lets you tighten and loosen without swapping tools. The ergonomic non-slip grip keeps the tool secure even with greasy hands.
I would recommend this ratchet to DIY mechanics, hobbyists, and anyone who needs an air ratchet for occasional use without breaking the bank. It is the perfect starter tool to figure out whether pneumatic ratchets fit your workflow. At this price, even if you upgrade later, the Dynamic Power serves as a capable backup.
The trade-offs are real, though. The Dynamic Power is very loud during operation, louder than the AIRCAT models by a wide margin. It can spit oil when first filled, which is messy but normal for air tools. The torque is not enough for rusted or seized bolts, so keep a breaker bar handy for those situations.
What to Expect at This Price Point
Budget air ratchets cut corners on noise reduction, refinement, and sometimes longevity. The Dynamic Power delivers on core functionality but lacks the polish of IR or AIRCAT tools. For occasional use, those trade-offs are easy to accept. For daily professional use, investing in a higher-quality tool pays off quickly.
Air Compressor Requirements
The Dynamic Power consumes 6 CFM at 90 PSI, which is actually higher than the WORKPRO at 4.7 CFM. You will need a compressor that can deliver at least 6 CFM sustained to avoid the tool starving for air. A 15 to 20-gallon compressor handles this comfortably for intermittent use.
8. WORKPRO 3/8-Inch Air Ratchet – Affordable with Smart Features
WORKPRO 3/8-Inch Air Ratchet Wrench, 50ft.lb Max Torque, 160RPM, 360 Degree Adjustable Exhaust, Forward/Reverse Control, Good Gift for Men Dad Father
3/8 inch drive
50 ft-lbs torque
160 RPM
360 degree exhaust
4.7 CFM
Pros
- 50 ft-lbs good torque
- 360 degree adjustable exhaust
- Soft rubber ergonomic grip
- Forward/reverse control
- Air inlet filter included
Cons
- May need sealant tape for leaks
- Requires regular oiling
- Air compressor not included
The WORKPRO 3/8-Inch Air Ratchet sits in an interesting middle ground between the budget Dynamic Power and the mid-range IR and AIRCAT options. With 50 ft-lbs of torque and 160 RPM, it matches the performance of tools costing significantly more. The 360-degree adjustable exhaust is a feature I did not expect at this price.
The adjustable exhaust lets you direct air output away from your face and workpiece, which is a comfort feature that matters more than you might think. The soft rubber-coated grip reduces vibration and improves control during extended use. The forward and reverse control knob makes direction changes simple without repositioning the tool.
With 100 reviews and a 4.4-star average, the WORKPRO has a solid early reputation. Users praise its power, build quality, and value. The 4.7 CFM air consumption is lower than the Dynamic Power’s 6 CFM, meaning it is easier on your air compressor. The air inlet filter prevents contamination from debris in your air line.
The main complaints are minor but worth noting. Some users needed to apply sealant tape to the air fitting to prevent leaks out of the box. Like all air ratchets, it requires regular oiling to maintain performance and prevent internal wear. Neither issue is unusual for pneumatic tools at any price point.
How the WORKPRO Compares to the Dynamic Power
The WORKPRO delivers slightly more torque at 50 ft-lbs versus the Dynamic Power’s 45 ft-lbs. It also has a lower CFM requirement and better features like the adjustable exhaust and rubber grip. For about $10 more, the WORKPRO is a meaningful upgrade if your budget allows.
Best Applications for the WORKPRO
This ratchet handles engine repair, household projects, and light industrial applications with ease. It is a versatile tool that works well for both automotive and non-automotive fastening tasks. The 11-inch length provides good reach without being unwieldy in tight spaces.
Buying Guide: How to Choose the Best Air Ratchet
Choosing the right air ratchet comes down to understanding your needs and matching them to the right specs. Here is what matters most when evaluating pneumatic ratchets for mechanic work.
Torque Rating
Torque determines what bolts your ratchet can handle. For general automotive work, 50 to 70 ft-lbs covers most fasteners. For heavy-duty work like suspension and exhaust, look for 76 ft-lbs or higher. The AIRCAT 805-HT leads the field at 130 ft-lbs. Remember that rated torque is maximum torque, and real-world torque varies based on air pressure and compressor capacity.
Drive Size Selection
The 3/8 inch drive is the most versatile choice for automotive mechanics. It handles the majority of fasteners you will encounter. A 1/4 inch drive is better for small, delicate work in tight spaces. A 1/2 inch drive is for heavy-duty applications where you need larger sockets and more torque. Most mechanics start with a 3/8 and add others as needed.
Air Consumption and CFM Requirements
CFM (cubic feet per minute) measures how much air the tool consumes. The Dynamic Power needs 6 CFM at 90 PSI, while the WORKPRO requires only 4.7 CFM. Your compressor needs to deliver the tool’s CFM requirement continuously, not just at peak. A compressor rated for 5 CFM at 90 PSI will handle most air ratchets, but a 10 CFM compressor gives you headroom for simultaneous tool use.
72 Tooth vs 90 Tooth Ratchets
This is one of the most common questions mechanics ask. Tooth count determines the swing arc needed to turn the ratchet. A 72-tooth ratchet requires 5 degrees of swing per click, while a 90-tooth ratchet needs only 4 degrees. The 90-tooth design is better for extremely tight spaces where you have very little room to swing the handle. However, 72-tooth ratchets are generally stronger because each tooth is larger and handles more load. For most automotive work, 72 teeth is plenty.
Noise Level Considerations
Air ratchets are loud tools, but some are much louder than others. The AIRCAT models lead the field with 82 to 84 dBA thanks to their patented silencing technology. The Chicago Pneumatic CP886 hits 98 dBA, which is genuinely painful without hearing protection. If you work in a shared shop or residential area, noise level should factor heavily into your decision.
Brand Reputation and Warranty
Ingersoll Rand and AIRCAT dominate professional mechanic recommendations on forums like Garage Journal and Reddit. Both brands offer proven durability and decent warranties. AIRCAT stands out with 2-year warranties on their ratchets, while IR offers 1-year limited coverage. Budget brands like Dynamic Power and WORKPRO offer standard manufacturer warranties that vary by seller.
Weight and Ergonomics
If you use an air ratchet for hours at a time, weight matters. The lighter tools in our roundup include the Dynamic Power at 2.6 pounds and the WORKPRO at 2.7 pounds. Heavier options like the AIRCAT 805-HT at 3.2 pounds deliver more power but cause more fatigue. Look for ergonomic grips and rubber cushioning to reduce vibration transfer.
FAQs
What brands of air ratchets are best?
Ingersoll Rand and AIRCAT are the most recommended air ratchet brands among professional mechanics. Ingersoll Rand is known for the 109XPA with its Twin Pawl Plus design, while AIRCAT leads in torque with the 805-HT and noise reduction with the 802. DEWALT and Chicago Pneumatic also make solid options for budget-conscious buyers.
What are the best ratchets for mechanics?
The best air ratchets for mechanics are the AIRCAT 805-HT for maximum torque at 130 ft-lbs, the Ingersoll Rand 109XPA for the best all-around performance at 76 ft-lbs and 220 RPM, and the AIRCAT 802 for the quietest operation at 82 dBA. For budget-conscious mechanics, the Dynamic Power at under $30 is a solid starter choice.
Is a 72 tooth or 90 tooth ratchet better?
A 90-tooth ratchet is better for extremely tight spaces because it requires only 4 degrees of swing arc per click versus 5 degrees for a 72-tooth model. However, 72-tooth ratchets are generally stronger since each tooth is larger and handles more load. For most automotive work, 72 teeth provides an excellent balance of strength and accessibility.
What is the most powerful air ratchet?
The AIRCAT 805-HT is the most powerful air ratchet in this lineup with 130 ft-lbs of maximum torque. It nearly doubles the torque of standard 3/8 inch air ratchets and can break loose bolts that would stall most other ratchets. The Ingersoll Rand 109XPA is the second most powerful at 76 ft-lbs.
Can I use an air ratchet for automotive work?
Yes, air ratchets are excellent for automotive work. They speed up fastener removal and installation significantly compared to manual ratchets. They work well for engine repair, suspension work, brake jobs, and general assembly tasks. However, they are not designed for breaking loose rusted bolts or for final torque application, where you should use a breaker bar and torque wrench respectively.
Conclusion: Which Air Ratchet Is Right for You
Finding the best air ratchets for mechanics in 2026 comes down to matching torque, noise level, and budget to your specific needs. The AIRCAT 805-HT is the clear winner for mechanics who need maximum power, delivering 130 ft-lbs of torque that handles the toughest bolts. The Ingersoll Rand 109XPA remains the best all-around choice with its proven Twin Pawl Plus design and 1,100-plus reviews backing its reliability.
For budget-conscious buyers, the Dynamic Power delivers surprising capability at under $30, while the WORKPRO adds smart features like a 360-degree adjustable exhaust for just a few dollars more. Whatever your choice, invest in a quality air compressor that meets the CFM requirements of your chosen tool, and always wear hearing protection when using pneumatic ratchets.