Proto J4936CF Open End Crowfoot Wrench 1-1/8 in

Product Description

The PROTO J4936CF is a 1-1/8 inch open end crowfoot wrench designed for use with standard 3/8 inch drive ratchets and extensions. The crowfoot head allows access to fasteners in tight or recessed locations where a conventional open end wrench cannot reach. The head measures 2.09 inches in diameter and 0.38 inches in thickness, giving it a low-profile design suited for confined spaces. A chrome-plated finish resists corrosion and simplifies cleanup after use. This tool is commonly used by mechanics, HVAC technicians, plumbers, and electricians working in areas with restricted clearance around nuts and bolts.

The J4936CF is well suited for maintenance and service work where fasteners are obstructed by adjacent components, hoses, or conduit. Typical applications include torquing hex fasteners on HVAC equipment, plumbing fittings, and mechanical assemblies where a standard wrench or socket cannot seat properly. The 1-1/8 inch size covers a range of fasteners common in trade and industrial service work. This wrench accepts any standard 3/8 inch drive ratchet, torque wrench, or extension, making it easy to integrate into an existing drive set.

Key Features

• 1-1/8 inch open end crowfoot head for use on hex fasteners in restricted spaces
• 2.09 inch head diameter with 0.38 inch head thickness for low-profile clearance
• Chrome-plated finish for corrosion resistance and ease of cleaning
• Compatible with standard 3/8 inch drive ratchets, extensions, and torque wrenches
• Backed by a lifetime warranty from PROTO

Compatibility

Designed for use with standard 3/8 inch square drive ratchets and extensions. Fits 1-1/8 inch hex fasteners in HVAC, plumbing, electrical, and general mechanical service applications.

Installation Notes

Ensure the drive ratchet or torque wrench is fully seated in the crowfoot drive recess before applying force. Do not use cheater bars or extensions on the ratchet handle beyond the tool manufacturer recommendations, as this can damage the crowfoot or fastener. When using with a torque wrench, account for any offset angle between the crowfoot and the drive axis if precise torque values are required per the equipment service manual.