Proto J4934CF Open End Crowfoot Wrench 1-1/16 Inch

Product Description

The PROTO J4934CF is a 1-1/16 inch open end crowfoot wrench designed for fastener access in confined spaces where standard box or combination wrenches cannot reach. The chrome-plated finish resists corrosion and simplifies cleanup after use. With a head diameter of 2.09 inches and a head thickness of 0.38 inches, this crowfoot fits over fasteners in tight clearance areas and mounts to any standard 3/8 inch drive ratchet or extension. It is sized in the inch measurement system and built for professional mechanics, pipefitters, and maintenance technicians who need reliable torque transfer in restricted locations.

Crowfoot wrenches are commonly used in automotive, HVAC, and industrial maintenance applications where a straight-line approach to a fastener is blocked by components, housings, or piping. The J4934CF is suited for residential and commercial service work, equipment overhauls, and production line maintenance. It pairs with 3/8 inch drive torque wrenches when precise fastener torque is required. PROTO backs this wrench with a Lifetime Warranty, reflecting its intended use in professional trade environments.

Key Features

• 1-1/16 inch open end sizing for standard inch fasteners
• Head diameter of 2.09 inches for clearance over fastener heads
• Head thickness of 0.38 inches for use in shallow or confined spaces
• Chrome-plated finish for corrosion resistance and easy cleaning
• Compatible with 3/8 inch drive ratchets, extensions, and torque wrenches
• Lifetime Warranty from the manufacturer

Compatibility

Designed as an OEM-style replacement or professional-grade addition for use with standard 3/8 inch drive tool sets in inch-measurement applications.

Installation Notes

Installation and removal should be performed by a qualified mechanic or tradesperson familiar with drive tool use and fastener torque requirements. Ensure the crowfoot is fully seated on the fastener before applying torque to prevent rounding. When used with a torque wrench and an extension, account for the angular offset in torque calculations per standard mechanical practice. Inspect the wrench for cracks or wear before each use.