Proto J1186 Offset Box End Wrench 5/8 X 3/4 in 12 Point

Product Description

The PROTO J1186 is a double-end offset box end wrench sized at 5/8 inch and 3/4 inch, built from steel for durability in demanding trade environments. The offset design angles the head away from the handle, providing knuckle clearance and access to fasteners in recessed or obstructed locations. Each end features a 12-point box configuration, which gives the user more engagement positions per revolution compared to a 6-point design. At 0.45 pounds, the wrench is lightweight enough for overhead and confined-space work. This tool is used by HVAC technicians, plumbers, electricians, and general maintenance professionals who regularly work with hex fasteners in tight quarters.

The J1186 is suited for residential and commercial service applications where standard open-end wrenches lack the grip or clearance needed. The 5/8-inch end is a common size for pipe fittings, flare nuts, and equipment mounting hardware. The 3/4-inch end covers larger fasteners found on compressor mounts, electrical enclosures, and structural connections. The reversing capability adds versatility, allowing the wrench to be flipped and used in both tightening and loosening directions without changing tools.

Key Features

• Double-end design provides two wrench sizes in one tool: 5/8 inch and 3/4 inch
• 12-point box ends allow more handle positions in restricted swing arcs
• Offset head geometry improves knuckle clearance over fastener surfaces
• Reversing capability for both tightening and loosening without a separate tool
• Steel construction for strength and resistance to rounding under torque
• Lightweight at 0.45 pounds, practical for overhead and confined-space use

Compatibility

Designed as a general-purpose offset box end wrench for use with standard SAE hex fasteners measuring 5/8 inch and 3/4 inch across flats, common in HVAC, plumbing, electrical, and mechanical maintenance applications.

Installation Notes

Use by licensed tradespeople and maintenance professionals in accordance with applicable safety practices. Always confirm fastener size before applying torque to avoid rounding. Inspect the wrench for cracks or deformation before each use and remove it from service if damage is found. Store in a dry location to prevent corrosion of the steel construction.