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Five colour-coded half-inch drive torque extension bars in a case

American Forge & Foundry, Inc.

American Forge & Foundry 40012 1/2" Drive 5 Pc Torque Limiting Extension Set

SKU CH-BVWN-3790C

Five 1/2" drive torque-limiting extensions at 65, 80, 100, 120 and 140 ft-lb prevent wheel and rotor damage from over-tightening

  • ColorTransparent
  • Prevents wheel damage by limiting torque to preset values
  • Spring steel design stops turning at set torque for longer life
  • Five extensions cover 65, 80, 100, 120 and 140 ft-lb ratings
  • Laser-etched markings provide permanent torque identification on each extension
  • Includes carrying case for organised storage and transport

Five torque settings

This 1/2" drive set contains five torque limiting extensions rated at 65, 80, 100, 120 and 140 ft-lb. Each piece uses a machine welded drive plate and a spring steel mechanism that stops turning when the preset torque is reached. Laser etched markings provide permanent identification of each rating. A carrying case keeps the extensions organised for workshop or mobile use.

Automotive wheel service

Technicians tightening lug nuts on cars and light trucks will find the range covers common manufacturer specifications. The spring steel design prevents over-tightening that can damage wheels and brake rotors. Users who need torque values outside the 65 to 140 ft-lb range, or who require a calibrated torque wrench for critical fasteners, should select a different tool.

Spring steel torque limiting

The defining feature is the spring steel construction that physically stops rotation once the factory preset torque is achieved. This mechanism delivers consistent limiting action without adjustment and contributes to longer tool life under heavy duty automotive use. The 1/2" drive plate is machine welded for secure socket retention during operation.

Highlights

  • Prevents wheel damage by limiting torque to preset values
  • Spring steel design stops turning at set torque for longer life
  • Five extensions cover 65, 80, 100, 120 and 140 ft-lb ratings
  • Laser-etched markings provide permanent torque identification on each extension
  • Includes carrying case for organised storage and transport

Specifications

BrandAMERICAN FORGE & FOUNDRY
ColorTransparent

Questions about this item

Which torque rating should I pick from the 65, 80, 100, 120 and 140 ft-lb extensions?

Match the extension to the lug-nut torque specification in the vehicle service manual; the set covers common values from 65 to 140 ft-lb.

What happens when the preset torque is reached on these extensions?

The spring steel design stops the extension from turning further, preventing over-tightening of lug nuts.

What drive size do these extensions fit?

They have a machine-welded 1/2 inch drive plate for standard 1/2 inch drive tools.

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