Proto J72102 Impact Socket Set 9 Pc 3/8 in Drive

Product Description

The PROTO J72102 is a 9-piece impact-rated standard socket set built for 3/8 inch drive tools. Each socket is machined to 6-point geometry, which concentrates force on the flat faces of a fastener rather than the corners — reducing rounding on worn or stubborn hardware. The set covers 1/4 inch through 3/4 inch in nine incremental sizes and is designed for use with pneumatic, electric, or manual 3/8 inch drive impact wrenches and ratchets. Sockets are stored on a clip rail for organized storage in a tool chest or service vehicle. Total set weight is 1.07 pounds. The set conforms to ANSI Spec B107.2 and Federal Spec GGG-W-660A.

This socket set is suited for HVAC technicians, plumbers, electricians, and general mechanical trades who need a compact 3/8 inch drive impact socket assortment for service calls and equipment installation. The 1/4 inch to 3/4 inch range covers the fastener sizes most commonly encountered in equipment panels, mounting hardware, and mechanical assemblies. The clip rail format makes it practical for use in a tray drawer or portable toolbox without a separate case.

Key Features

• 9-piece set covers 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4 inch sizes
• 3/8 inch drive fits standard impact wrenches, ratchets, and extensions
• 6-point socket geometry reduces fastener rounding under high torque
• Impact-rated construction for use with pneumatic and electric impact tools
• Clip rail storage keeps sockets organized and accessible
• Conforms to ANSI B107.2 and Federal Spec GGG-W-660A

Compatibility

Designed for use with any 3/8 inch drive impact wrench, ratchet, or breaker bar. Socket sizing is inch-measurement standard, covering 1/4 inch through 3/4 inch in the nine increments listed above.

Installation Notes

These sockets are intended for use by qualified trade professionals familiar with impact tool safety practices. Always verify the socket is fully seated on the drive before applying torque. Do not use standard chrome sockets in place of impact-rated sockets with pneumatic or electric impact tools, as non-impact sockets can fracture under high-cycle loading. Inspect sockets for cracks or wear before each use and replace any damaged socket immediately.