Proto J5322MCF Open End Crowfoot Wrench Metric

Product Description

The PROTO J5322MCF is a metric open end crowfoot wrench finished in chrome plating. Crowfoot wrenches attach to a standard ratchet or torque wrench drive via a square drive socket, allowing access to fasteners in confined spaces where a conventional box or open end wrench cannot reach. The chrome finish provides corrosion resistance for shop and field use. At 2.9 inches overall length and 0.34 pounds, this is a compact, lightweight tool suited for tight-clearance work on engines, hydraulic fittings, and mechanical assemblies. PROTO backs this wrench with a Limited Lifetime Warranty. Installed by mechanics, HVAC technicians, plumbers, and industrial maintenance trades.

This crowfoot wrench is intended for metric fastener applications. It is well suited for residential and commercial service work where a standard wrench cannot seat properly due to surrounding components or limited swing clearance. The open end design accepts flat-sided fasteners such as hex nuts and bolt heads. It is commonly used in under-hood automotive and equipment work, tight plumbing rough-ins, and mechanical equipment panels where standard drive tools cannot seat flush.

Key Features

• Open end crowfoot design mounts to any standard square drive ratchet or torque wrench
• Metric system of measurement for fastener compatibility
• Chrome-plated finish for corrosion resistance and easy cleaning
• Compact overall length of 2.9 inches for use in restricted access areas
• Lightweight at 0.34 pounds for extended use without fatigue
• Backed by a Limited Lifetime Warranty from PROTO

Compatibility

Designed as an OEM-style replacement or service addition for metric fastener applications requiring a crowfoot-style open end wrench on a standard square drive ratchet or torque wrench.

Installation Notes

This tool is installed by mechanics, HVAC technicians, plumbers, and maintenance professionals working on metric fasteners in confined spaces. Ensure the square drive connection is fully seated on the ratchet or torque wrench before applying torque. Verify fastener size before use to avoid rounding the fitting. Keep the wrench clean and inspect the chrome finish periodically for wear that may affect grip on fastener flats.