Proto J52207 18pc 3/8 in Drive Metric Deep Socket Set

Product Description

The PROTO J52207 is an 18-piece metric deep socket set built for professional tradespeople who need reach and grip in tight or recessed fastener applications. It runs on a 3/8 inch drive and covers sizes from 6 mm to 23 mm. Each socket features a 12-point design for engagement on both standard hex fasteners and worn or rounded hardware. The chrome finish resists corrosion and makes cleanup straightforward in shop and field environments. At 4.55 pounds for the full set, it is substantial enough to signal quality without being unwieldy in a tool bag or cart.

This set is suited to HVAC technicians, plumbers, electricians, and general mechanical tradespeople who encounter metric fasteners on equipment panels, pipe hangers, electrical enclosures, motor mounts, and similar assemblies. The deep profile accommodates bolts with extended thread length or fasteners seated below a recessed surface, making it a practical choice for equipment service work where standard-depth sockets cannot reach.

Key Features

• 18-piece set covers 6 mm through 23 mm in a single kit
• 3/8 inch drive compatible with standard 3/8 inch ratchets, extensions, and adaptors
• 12-point socket geometry engages fasteners from multiple angles and works on worn hex heads
• Deep socket profile reaches recessed or long-thread fasteners that shallow sockets cannot access
• Chrome finish provides corrosion resistance and simplifies cleaning after use
• Metric sizing suits equipment and components manufactured to metric fastener standards

Compatibility

Designed for use with standard 3/8 inch drive ratchets, breaker bars, torque wrenches, and extensions. Compatible with any 3/8 inch drive tool accepting metric deep sockets.

Installation Notes

A licensed or qualified technician should select the correct socket size before applying torque to avoid rounding fasteners. Ensure the socket is fully seated on the fastener and the drive tool is properly engaged before applying force. Inspect sockets for cracks or deformation before each use and remove any damaged socket from service. Follow applicable equipment manufacturer torque guidelines when reassembling components.