Proto J5332MCF Open End Crowfoot Wrench Chrome Metric

Product Description

The PROTO J5332MCF is a metric open end crowfoot wrench finished in chrome plating. Crowfoot wrenches attach to a standard ratchet or extension, allowing technicians to reach fasteners in confined spaces where a conventional open end wrench cannot fit. The J5332MCF measures 3.3 inches in overall length and weighs 0.47 pounds, keeping it light and maneuverable in tight quarters. The chrome finish resists corrosion and makes cleaning grease and fluid residue straightforward. It is used by HVAC technicians, plumbers, pipefitters, and general mechanics who regularly work around obstructions or deep in equipment cavities.

This crowfoot wrench is suited for metric fastener applications in residential and commercial service environments. Common scenarios include tightening or loosening fittings on refrigerant lines, hydraulic connections, and pipe assemblies where straight-on wrench access is blocked by adjacent components or structural framing. The open end design accommodates hex fasteners and flats on fittings without requiring the wrench to slip over the top of the fastener, making it useful in partially disassembled assemblies.

Key Features

• Open end crowfoot design fits standard ratchet drives and extensions for offset access
• Metric sizing for use on metric fasteners and fittings
• Chrome-plated finish provides corrosion resistance and easy cleanup
• Compact overall length of 3.3 inches suits confined-space applications
• Lightweight at 0.47 pounds for reduced hand fatigue during extended use
• Backed by a limited lifetime warranty from PROTO

Compatibility

Designed as a standard metric open end crowfoot wrench compatible with common square-drive ratchets and extensions used in trade service work.

Installation Notes

Install and remove fasteners using a calibrated torque wrench or ratchet with the appropriate square drive. Ensure the crowfoot is fully seated on the fastener flat before applying torque to avoid rounding. De-energize or depressurize any system before servicing fittings or fasteners. Do not use with cheater bars or pipe extensions, as this can exceed the tool's design limits.