Harbor Freight Tools


Pneumatic 1/4 In. Professional Die Grinder with 4 In. Extension

The CHIEF™ Professional Air Extended Die Grinder has a 4 in. extended shaft for limited space applications

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The CHIEF™ Professional Air Extended Die Grinder has a paddle trigger for superior control and a 4 in. extended shaft to reach obstructed areas. The ergonomic grip reduces vibration while the compact design provides excellent maneuverability.

  • 4 in. extension for applications with limited space
  • Paddle trigger with safety provides smooth operation and control
  • Ergonomic grip delivers comfort, reduced vibration and less fatigue
  • Adjustable speed control

Important Information

  • Harbor Freight’s CHIEF products are not endorsed by or affiliated with Chief Automotive Technologies, Vehicle Services Group, LLC, or their affiliates.

Collet size (in.)
1/4 in.
Exhaust location
Recommended hose size (in.)
3/8 in.
Accessories Included
11mm and 17mm hex wrench
Air inlet size
1/4 in.- 18 NPT
Average air consumption
Speed (max)
20,000 RPM
Product Height
2-7/16 in.
Product Length
9 in.
Product Weight
1.42 lb.
Product Width
1-1/2 in.
Shipping Weight
2.60 lb.
1/4 in.
Working pressure (psi)
90 PSI
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.