Proto J4938CF Open End Crowfoot Wrench 1-3/16 in

Product Description

The PROTO J4938CF is a 1-3/16 inch open end crowfoot wrench built for professional use in tight or obstructed spaces where standard wrenches cannot reach. The crowfoot design fits onto a standard ratchet or torque wrench drive, allowing controlled torque application without a fixed handle in the way. The head measures 2.12 inches in diameter and 0.38 inches thick, keeping the profile low for confined work areas. A chrome-plated finish protects against corrosion and makes cleanup straightforward after use in field or shop environments. This tool is backed by a lifetime warranty from the manufacturer.

Open end crowfoot wrenches like the J4938CF are used across plumbing, HVAC, and mechanical trades wherever a fastener or fitting sits in a location that blocks a standard wrench handle. Common applications include torquing flare fittings, brake line fittings, hydraulic connections, and similar recessed or inline fasteners. The 1-3/16 inch size is a common imperial specification encountered in residential and light commercial mechanical systems. This wrench suits professional technicians and journeymen who work frequently with torque-sensitive connections requiring a drive-tool interface.

Key Features

• 1-3/16 inch wrench size in the inch measurement system
• Open end crowfoot design accepts standard ratchet or torque wrench drives
• Head diameter of 2.12 inches with a low-profile 0.38 inch head thickness
• Chrome-plated finish for corrosion resistance and easy cleaning
• Lifetime warranty from PROTO
• Sold as a single piece; compatible with standard drive setups

Compatibility

Designed as an OEM-style replacement and standard addition to imperial drive tool sets; fits standard ratchet and torque wrench drive configurations in 1-3/16 inch open end applications.

Installation Notes

This crowfoot wrench is installed by a qualified mechanic or tradesperson onto a compatible ratchet or torque wrench drive before applying to the fastener. Ensure the drive connection is fully seated before applying torque to prevent slippage or rounding of the fitting. Verify the fastener size matches the wrench opening before use. Proper torque values should be sourced from the equipment manufacturer's service documentation.