Proto J72230 Impact Socket Set 18 Pc 3/8 in Drive

Product Description

The PROTO J72230 is an 18-piece impact and standard socket set built around a 3/8 inch drive. The set covers inch sizes from 1/4 inch to 3/4 inch and metric sizes from 10 mm to 19 mm, giving technicians a broad range without switching drive sizes. All sockets are 6-point, which delivers better torque transfer and reduces fastener rounding under impact load. Constructed from steel, the set includes a socket bar and clips for organized storage. A lifetime warranty backs the entire set. HVAC, plumbing, and electrical professionals who work in tight mechanical rooms or on equipment panels will find this dual-measurement coverage practical for daily service calls.

This socket set suits trade professionals who need both inch and metric coverage from a single tray. It is appropriate for residential and light commercial service work including air handler installations, condensing unit mounting hardware, panel work, and pump or fixture connections. The included sizes address the fastener variety commonly encountered on equipment manufactured to both SAE and metric standards. The socket bar and retaining clips keep individual sockets indexed and ready during fast-paced service calls.

Key Features

• 18-piece set with 3/8 inch drive covers both inch and metric fasteners in one kit
• 6-point socket geometry reduces fastener rounding under impact torque
• Rated for both impact and standard hand-tool use
• Inch sizes: 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4 inch
• Metric sizes: 10, 11, 12, 13, 14, 15, 17, 18, and 19 mm
• Includes socket bar and clips for organized storage and quick retrieval
• Backed by a lifetime warranty

Compatibility

Designed for use with any 3/8 inch drive impact wrench, ratchet, or breaker bar. Fits standard 3/8 inch square drive tooling used across HVAC, plumbing, electrical, and general mechanical service applications.

Installation Notes

Always de-energize equipment and shut off gas or water supply before beginning any fastener work on live systems. Confirm the socket is fully seated on the fastener before applying torque to prevent slippage and personal injury. Use impact-rated sockets only with impact drivers and wrenches — do not substitute chrome hand-tool sockets under impact load. Follow applicable NEC, IFGC, or IPC guidelines when working on regulated systems.