Proto J72202 Impact Socket Set 11 Pc 3/8 in Drive Metric

Product Description

The PROTO J72202 is an 11-piece metric impact socket set built for professional trade use with a 3/8 inch drive. The set covers sizes from 7 mm through 17 mm in 6-point configuration, providing maximum contact with fastener flats to reduce rounding under high-torque impact loads. Sockets are mounted on a clip rail for organized storage and quick access on the job. This set is suited for HVAC technicians, plumbers, electricians, and general mechanical tradespeople who use 3/8 inch drive impact tools in daily service work.

This socket set is appropriate for residential and light commercial service applications where metric fasteners are standard. The 6-point design makes it a reliable choice for work on equipment panels, mechanical connections, and structural fasteners encountered in HVAC, plumbing, and electrical installations. The clip rail container keeps all 11 sockets organized during transport and at the workbench. Individual sizes — 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, and 17 mm — cover the most common metric fastener range found on trade equipment.

Key Features

• 11-piece metric socket set covering 7 mm to 17 mm in full sequential sizing
• 3/8 inch drive compatible with standard and impact-rated ratchets and drivers
• 6-point socket geometry reduces fastener rounding under impact torque
• Clip rail container for organized storage and transport
• Impact and standard dual-rated for use with hand ratchets or pneumatic and cordless impact tools

Compatibility

Designed for use with 3/8 inch drive impact and standard ratchets, extensions, and adapters. Compatible with any 3/8 inch drive impact tool accepting standard metric impact sockets.

Installation Notes

This socket set is used by licensed HVAC technicians, plumbers, electricians, and mechanical contractors for fastener removal and installation. Always confirm the socket size matches the fastener before applying torque to avoid rounding. When using with an impact driver, ensure sockets are rated for impact use — the J72202 carries both impact and standard ratings. Store sockets on the clip rail when not in use to prevent loss and maintain set integrity.