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Gray torque limiting extension with powder coat finish and hard stamped markings

American Forge & Foundry, Inc.

American Forge & Foundry 40100 Torque Limiting Extension Gray 100

SKU CH-0F52-NMK26

Torque limiting extension stops turning at 100 ft-lb to protect wheels and studs during tire changes

  • Product colorTransparent
  • Prevents over-torquing wheels with 100 ft-lb limit
  • Maintenance-free design needs no recalibration
  • Chrome molybdenum steel construction ensures maximum durability
  • Powder coat finish resists chipping and fading
  • Color coding and stamped markings allow quick identification

1/2 in Drive Torque Limiting Extension

This 1/2 in drive torque limiting extension is built for tire shops, automotive repair, and fleet maintenance. It stops turning once the specified torque is reached, protecting wheels, studs, and brake rotors from over-torquing. Professional grade chrome molybdenum steel ensures maximum durability and long life.

Installation and common issues

The extension fits directly onto a 1/2 in drive impact wrench or breaker bar without additional adapters. Color coding and hard stamped size markings allow quick identification on a busy shop floor. The most frequent error is using the extension beyond its rated torque value, which defeats the limiting function and risks hardware damage.

Sustained use behavior

The maintenance and recalibration free design delivers consistent torque limiting over repeated cycles. Powder coat finish resists chipping, scratching, and fading during daily shop use. Chrome molybdenum steel construction maintains structural integrity under continuous high volume wheel service.

How it compares

Measured against everything we stock in Ratchets, Sockets & Drive Tools, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 63% of the 418 comparable items (median $20.99).

Specifications

Product
Brand nameAMERICAN FORGE & FOUNDRY
Product colorTransparent

Questions about this item

How can I verify the 40100 extension is stopping at the correct 100 ft-lb torque after setup?

The extension is designed to stop turning once the specified 100 ft-lb torque is reached, preventing over-tightening of wheel lug nuts.

What comes with the 40100 torque limiting extension and what must I purchase separately?

The package includes the 1/2 inch drive torque limiting extension itself; a compatible 1/2 inch drive ratchet or impact gun and appropriate sockets are sold separately.

Which torque capacity should I select for my wheel service needs?

Choose the 100 ft-lb version when your vehicle manufacturer specifies that torque value for wheel lug nuts; other capacities are available for different specifications.

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