Proto J5259B 3/8 Inch Drive Socket Extension 1.75 in

Product Description

The PROTO J5259B is a 3/8 inch drive standard socket extension with an overall length of 1.75 inches. It connects a 3/8 inch drive ratchet or breaker bar to standard sockets, allowing access to fasteners in confined spaces. At 0.11 pounds, this compact extension is a common addition to a professional tool kit used by HVAC technicians, plumbers, electricians, and other trade professionals who regularly work in tight clearances around equipment. The short length makes it well suited for applications where a direct drive connection is too bulky but a longer extension would create unwanted flex or torque loss.

This extension is intended for use with standard 3/8 inch drive sockets in a wide range of service and installation applications. Typical uses include equipment panel fastener removal, motor mounting hardware, valve packing glands, and general mechanical assembly tasks encountered in residential and light commercial trade work. Its compact overall length makes it a go-to tool when working around ductwork, piping, or electrical enclosures where tool clearance is limited.

Key Features

• 3/8 inch drive interface compatible with standard 3/8 inch drive ratchets and sockets
• 1.75 inch overall length provides compact reach for tight-clearance fastener work
• Lightweight at 0.11 pounds for easy single-hand use
• Sold individually — one extension per package

Compatibility

Designed for use with standard 3/8 inch drive ratchets, breaker bars, and sockets. No specific model compatibility data was provided by the manufacturer for this extension.

Installation Notes

This tool is used by qualified trade professionals for general fastener service tasks. No power-down or lockout procedure is required for the tool itself, but always de-energize and isolate any equipment before performing mechanical service on it. Ensure the socket is fully seated on the extension square drive before applying torque to avoid slippage or rounding fastener heads.