Proto J5328MCF Open End Crowfoot Wrench Chrome Metric

Product Description

The PROTO J5328MCF is a metric open end crowfoot wrench with a chrome-plated finish, designed for reaching fasteners in confined spaces where a standard open end wrench cannot fit. At 3 inches in overall length, it seats onto a standard socket drive extension or ratchet to deliver torque directly to hex fasteners. The chrome plating resists corrosion and makes the tool easy to wipe clean in shop environments. This wrench is appropriate for use by licensed mechanics, HVAC technicians, plumbers, and other trade professionals who regularly work in tight quarters around piping, fittings, and equipment brackets.

Open end crowfoot wrenches are used in applications where clearance is limited and a box-end or ratcheting wrench cannot engage the fastener. Common install scenarios include working around refrigerant lines, conduit fittings, plumbing supply connections, and equipment mounting hardware. The metric sizing makes it suitable for imported equipment, late-model machinery, and metric-standard fastener applications across residential and light commercial service work.

Key Features

• Chrome-plated finish for corrosion resistance and easy cleaning
• Metric system of measurement for compatibility with metric fasteners
• 3 inch overall length for compact reach in confined spaces
• Drives onto standard socket extensions and ratchets
• Limited Lifetime Warranty from PROTO

Compatibility

Designed as an OEM-style service tool for use with standard drive socket extensions and ratchets in metric fastener applications across HVAC, plumbing, and mechanical service work.

Installation Notes

Seat the crowfoot wrench squarely onto the fastener before applying torque to avoid rounding the hex. Ensure the drive extension and ratchet are rated for the torque demands of the application. Power down or de-energize equipment and shut off fluid supply lines before working on fasteners in pressurized or energized systems. This tool is intended for professional use by qualified tradespeople following applicable codes and safety practices.