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PROTO 3/8 and 1/2 Inch Mini Impact WrenchesAir Tools

PROTO 3/8 and 1/2 Inch Mini Impact Wrenches

PROTO Industrial Tools introduces its line of Mini Impact Wrenches. The 3/8” Mini Impact Wrench (J138WP-M) and the 1/2" Mini Impact Wrench (J150WP-M) are powerful, compact, and lightweight tools optimized for confined spaces in industrial settings.

PROTO Mini Impact Wrenches deliver big power in a small package that allows them to break loose and fasten bolts in a limited space. With the versatility to perform multiple applications with one tool, they also provide durability for the demands of the industrial market.

At 4.4 inches in length, the 3/8” Mini Impact Wrench features 445 foot-pounds of breakaway torque. Also at 4.4 inches in length, the 1/2” Mini Impact Wrench features 635 foot-pounds of breakaway torque.

Each unit weighs only 2.9 pounds which adds to their ease of use in a wide range of applications including the assembly and disassembly of heavy equipment, industrial maintenance and repair, manufacturing, and fleet maintenance.

With high-performing tools and a large service network, PROTO’s Mini Impact Wrenches will be available where PROTO products are sold in February 2016. The Mini Impact Wrenches are compatible with PROTO’s line of impact sockets and drive tools.


  • Model: J138WP-M
  • Drive Size: 3/8 Inch
  • Breakaway Torque ( Foot Pounds): 445
  • Blow Rate Forward (BPM): 1,350
  • Free Speed (RPM): 6,000
  • Average Air Consumption (CFM): 3
  • Overall Length (Inches): 4 13/32
  • Model: J150WP-M
  • Drive Size: 1/2 Inch
  • Breakaway Torque ( Foot Pounds): 635
  • Blow Rate Forward (BPM): 1,500
  • Free Speed (RPM): 10,000
  • Average Air Consumption (CFM): 4.5
  • Overall Length (Inches): 4 13/32

For more information call 800-800-TOOL, or visit