Proto J4960CF Open End Crowfoot Wrench 1-7/8 in

Product Description

The PROTO J4960CF is a 1-7/8 inch open end crowfoot wrench built for trade professionals who need reach and torque in tight or obstructed fastener locations. The crowfoot design attaches to a standard 3/8-inch or 1/2-inch drive ratchet or torque wrench extension, allowing access to fasteners that a conventional open-end wrench cannot reach. The head measures 3.2 inches in diameter and 0.38 inches in thickness, keeping the profile low in confined spaces. A chrome-plated finish provides corrosion resistance and makes the tool easier to clean after use. This wrench is sold as a single piece.

Crowfoot wrenches in this size range are commonly used by HVAC technicians, plumbers, and mechanical contractors when working on refrigerant line fittings, flare nuts, union connections, and valve packing nuts. The 1-7/8 inch size is frequently encountered on larger refrigerant service valves, gas line fittings, and hydraulic or pneumatic system components. It is suited for both residential and light commercial service work where standard open-end access is blocked by adjacent piping, insulation, or structural framing.

Key Features

• 1-7/8 inch open end crowfoot fits standard ratchet and torque wrench drives
• Head diameter of 3.2 inches provides full contact on fastener flats
• Head thickness of 0.38 inches allows use in low-clearance spaces
• Chrome-plated finish resists corrosion and simplifies cleanup
• Lifetime warranty from the manufacturer
• Inch measurement system; single-piece packaging

Compatibility

Designed for use with standard 3/8-inch or 1/2-inch drive ratchets, extensions, and torque wrenches as a crowfoot-style open end attachment. No specific tool family compatibility was stated in the product data beyond the 1-7/8 inch inch fastener size.

Installation Notes

Crowfoot wrenches are installed by licensed HVAC technicians, plumbers, and mechanical trades. Always ensure the drive square engagement is fully seated before applying torque. When using with a torque wrench, account for any angular offset between the crowfoot head and the drive centerline, as this affects the actual torque delivered to the fastener. De-energize or depressurize the system being serviced before loosening or tightening fittings.