Gearwrench 5pc 1/2" Drive Torque Limiting Impact Extension Bar Set

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GEARWRENCH Torque Limiting Impact Extensions are designed for professional garages to quickly tighten lug nuts and other fasteners to pre-set torque designations. They provide torque values that are applicable to many of the most common car, truck, and trailer lug nut torque requirements. The 1/2" drive bars are designed to be used with pneumatic or cordless impact wrenches. Each bar is color coded to help you quickly identify the torque value and stored within a convenient storage case.


  • Designed to limit the amount of torque applied to a fastener when using a calibrated impact wrench
  • Includes (5) 1/2" drive torque limiting extensions: 65, 80, 100, 120, 140 ft. lbs.
  • Engineered for use with both cordless and pneumatic impact wrenches
  • Chrome molybdenum alloy steel (Cr-Mo) for exceptional strength and durability
  • High-visibility laser-etched markings provide quick size identification
  • Color coded rings allow for easy torque range identification
  • Pin hole design for use with pin and O-ring for a secure attachment to drive tools
  • Extension bars are 8" in length
  • Includes blow mold case for storage and organization
  • Meets or exceeds ASME specifications


  • Prop 65 : WARNING: This product contains or produces a chemical known to the State of California to cause cancer and birth defects or other reproductive harm.
  • ASME Specification : Meets or exceeds ASME specifications
  • Overall Length : 8.0
  • Size : 65 ft/lb
    80 ft/lb
    100 ft/lb
    120 ft/lb
    140 ft/lb
  • Packaging : Sleeve
  • Weight (Catalog) : 4.180
  • Warranty : Full Lifetime
  • Drive Tang Size : 1/2 in
  • Input Drive : 1/2 in
  • Finish : Black Oxide
  • Set Size Range Min : 65 ft/lb
  • UPC : 099575371608
  • Set Size Range Max : 140 ft/lb
  • Included Storage : Blow Mold Case
  • Set Piece Count : 5
  • Drive Type : 1/2" Square Drive
  • Material : Chrome-Molybdenum (Cr-Mo)
More Information
Product Name Gearwrench 5pc 1/2" Drive Torque Limiting Impact Extension Bar Set
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