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 CORNWELL TOOLS IRC232A 1/2 DRIVE AIR IMPACT WRENCH**BNIB*** US $129.99 
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 HARBOR FREIGHT 1/2 PROFESSIONAL AIR IMPACT WRENCH COUPON SAVE $45 EXP 6/18/2012 US $.01
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 New in box Ex-cell DeVilbiss Air Co. 3/8" Air Pneumatic Ratchet Wrench ETR381 US $9.99
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 1/2" Drive PRO AUTO MECHANICS AIR WRENCH SAE IMPACT SOCKET SET ON A SNAP IN RAIL US $9.93
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 Snap On 1/2 dr XT7100 Air Impact Wrench 700 Ft pd - N Boot - Strong!! G Price!! US $173.10
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 Craftsman Air Impact Wrench -3/4 dr -Torque Tested - Popular Model! 30 Day Ret!! US $79.60
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 AIRCAT® 1/2" Kevlar TM Composite Impact Wrench Twin Hammer US $321.99
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 NitroCat® 1/2" Kevlar TM Composite Impact Wrench US $323.99
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 1/2" DRIVE AIR IMPACT WRENCH/GUN COMPRESSOR TOOLS , COLOUR BOX **BRAND NEW ** US $36.28
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 AIRCAT 1/2" Drive Aluminum Air Impact Wrench US $211.99
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 EMAX 0.5" Heavy Duty Drive Composite Air Impact Wrench EATIWC5S1P US $140.99
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 3/8" Dr. Air Ratchet Wrench US $35.99
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 VW Volkswagen EMBLEM Tyre Tire Valve Stem Air Dust Caps US $5.99
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 1" INCH DRIVE LONG SHANK AIR IMPACT WRENCH GUN POWER US $279.95
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 3/4" Drive Super Duty Air Impact Wrench with 6" Extended Anvil US $565.99
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 Hyundai Wheel Tyre Tire Valve Stem Air Dust Caps+Wrench US $7.29
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 3/8" Dr PRO MECHANICS AIR IMPACT WRENCH METRIC DEEP SOCKET SET ON A SNAP IN RAIL US $9.99
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 Sealey Compact Air Impact Ratchet Wrench 3/8'' GSA635 US $94.89
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Dodge #534 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for BMW #530 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for BBS #529 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Alfa Romeo #527 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Fiat #535 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Jaguar #541 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Jeep #542 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Landrover #544 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Landrover #545 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Lotus #546 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for BMW #547 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Nism #548 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Nissan #550 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for BMW #531 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Seat #557 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Saab #556 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Ralliart #552 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Peugeot #551 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for VW Volkswagen #581 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Peugeot #593 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Opel #592 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Mitsubishi #591 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Mitsubishi #590 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Infiniti #588 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Autobots #587 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Michelin #585 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Mazda #583 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Germany #577 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for VW Volkswagen #576 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Mercedes Benz #575 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Porsche #574 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Renault #573 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Mercedes Benz #572 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Decepticons #570 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Toyota TRD #566 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Subaru #562 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Subaru Sti #560 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Smart #559 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Skoda #558 US $9.99
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 3/8 DR PRO AUTO MECHANIC AIR IMPACT WRENCH SAE DEEP SOCKET SET ON A SNAP IN RAIL US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Chevrolet #599 US $9.99
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 Car Tire Air Valve Stem Caps w/ Wrench Key Chain Ring for Lincoln #702 US $9.99
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 B Car Wheel Tire Valve Stem Air 4Caps+Wrench Key chain FOR Hyundai US $4.99
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 Mac Tools Air Impact Wrench 3/8 Drive AW3800 **NEW ** NO RESERVE US $150.00
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 Beta Tools 3/8SD Reversible Composite Air Impact Wrench 1924CD US $195.20
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 MAC TOOLS 1/2" DRIVE IMPACT AIR WRENCH Lightweight Composite Body US $300.00
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 MATCO TOOLS 3/8" DRIVE COMPOSITE IMPACT AIR WRENCH MT2120 300 ft. lbs TORQUE US $250.00
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 INGERSOLL RAND IR 107 3/8" DRIVE AIR RATCHET WRENCH US $75.00
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 Ingersoll-Rand Model 231C - 1/2" Drive Air Impact Wrench - New In Box US $99.95
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 Central Pneumatic EarthQuake 3/4" Professional Air Impact Wrench 68423 New US $189.99
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 NEW 3/8" Air Ratchet Wrench US $22.29
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 CP 733, 1/2" AIR IMPACT WRENCH US $125.00
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 RockShox Vivid Air Can Wrench US $43.99
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 KRC-5000 AIR TOOL RATCHET POWER SOCKET WRENCH CYCLONE SYSTEM THRU HOLE US $163.28
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 Facom 3/8 Air Impact Wrench NJ.2000F US $308.24
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 CRAFTSMAN PROFESSIONAL COMPOSITE 1/2" AIR IMPACT WRENCH NEW US $129.00
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 Central Pneumatic Professional 1/2" Twin Hammer Air Impact Wrench 94803 US $23.00
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 Florida Pneumatic FP-795L 1" Super Duty AIr Impact Wrench 1600 FT/LB US $359.99
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 9pc 3/8" Dr PRO AUTO MECHANIC AIR IMPACT WRENCH SAE SOCKET SET ON A SNAP IN RAIL US $9.63
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 Snap-On XT7100 Professional Heavy Duty 1/2” Pneumatic Air Impact Wrench US $119.00
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 CHICAGO PNEUMATIC 3/4 INCH DRIVE HEAVY DUTY AIR IMPACT WRENCH US $275.00
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 Cp-770 3/4" dr. Air Wrench US $325.00
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 1" Drive Super Duty Air Impact Wrench CPT796 US $3,419.11
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 1" F x 3/4" M Drive Impact Socket Reducer Adapter Air Wrench Power Coupler Kit US $14.94
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 Craftsman Air Ratchet Wrench. Great Condition. US $.99
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 SNAP ON 3/8 DRIVE AIR IMPACT WRENCH IM31A (NO RESERVE) US $120.00
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 Ingersoll Rand IR 2145QiMAX 3/4" Drive Air Impactool Maximum Impact Wrench/Gun US $558.07
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 3/8" Air Impact Wrench high torque pin clutch 75 ft/lbs US $69.00
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 Kobalt 1/2" Air Impact Wrench 232160 US $89.00
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 Airluxe 1/2" Air Impact Wrench Kit Automotive Tools NEW Compressor Shop Tool US $34.95
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 ***SNAP ON MG725 1/2" AIR IMPACT WRENCH*** US $196.38
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 SNAP ON TOOL BOLTSIZE IT GAUGE ratchet wrench drill air socket impact hammer US $14.99
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 Ingersoll-Rand 236 IR236 1/2" air Impact Wrench US $104.00
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 1/4" DRIVE AIR IMPACT RATCHET WRENCH 90PSI 250 RPM HEAVY DUTY NEW BY JET TOOLS US $50.00
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 Astro Pneumatic 1114 1/4-Inch Stubby Air Ratchet Wrench US $74.90
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 Husky 2-Piece Set 1/2" Impact Wrench 3/8" Ratchet Wrench 90 PSI Compressed Air US $60.00
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 TOOLUXE 1" HEAVY DUTY AIR IMPACT WRENCH GUN 1900 LBS TORQUE PRO GRADE INDUSTRIAL US $169.85
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 Craftsman 1/2 Air Impact Wrench US $24.99
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Air Wrench
Kobalt 1/2" Air Impact Wrench
Pneumatic Torque Wrench
A pneumatic torque wrench is an air driven tool designed to apply a specific, pre-set amount of torque or tension to a fastener, typically a nut and bolt. This precise tensioning is important in many multi-fastener applications where very close tolerances need to be maintained. Unlike other forms of torque wrenches, many pneumatic torque wrenches offer a wide range of torque settings. They are also generally smaller, more powerful, and cheaper to run than electrical or manual versions.
The pneumatic torque wrench makes use of a compressed air source to rapidly rotate a turbine type rotor, which in turn drives a shaft through a planetary reduction gearbox. This shaft is fitted with an adjustable clutch that is designed to "slip" or release at a pre-set tension. The shaft end of the pneumatic torque wrench is equipped with a fitting that allows various tools to be attached to the torque wrench depending on the application. When the pneumatic torque wrench is applied to a nut-and bolt assembly for instance, the tool will torque or tighten the nut until the pre-set tension is reached, whereupon the clutch will release and the wrench will no longer apply tension to the nut.
Many engineering applications require that fasteners be tensioned to a specific torque setting. This is particularly true of applications where several fasteners are used to equally secure two components together. The cylinder head of a car engine, for example, is usually fastened with six-to-eight stud and nut assemblies. As the cylinder head relies on a perfect fit between its lower surface and the engine block to ensure an effective gasket seal and the correct lining up of peripheral drive mechanisms, these studs have to be tensioned to exactly the same level. This precise tensioning is achieved with a torque wrench.
For various reasons, the use of compressed air to drive a pneumatic torque wrench is a common practice in those industries where such tools are used frequently. A pneumatic torque wrench is smaller and more manageable than an electrically driven model of similar capacity. For this reason, air driven tools tend to be far more powerful in reasonably sized packages than their electric counterparts such as the powered torque wrench. Pneumatic torque wrenches are also cost effective to run. This is because the generation of a compressed air source is cheaper than using electric tools. Powered or manual torque wrenches often come equipped with only a limited number of tension settings.
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