Proto J12124 Combination Wrench 3-7/8 in 15 Deg Offset

Product Description

The PROTO J12124 is a full-size combination wrench built for heavy-duty industrial and trade applications where a standard wrench will not reach. It features a 3-7/8 inch head size with a 15-degree offset on the box end, a straight handle, and a 37-inch overall length that provides extended reach and high torque leverage. The 12-point box end seats on fasteners quickly and allows swing in tight spaces. Constructed from corrosion-resistant steel and rated tether capable, this wrench meets ASME B107.100-2010 standards. It is designed for use by maintenance technicians, millwrights, pipefitters, and industrial mechanics working on large-diameter fasteners in mechanical and process equipment.

The J12124 is suited for industrial maintenance, construction, and heavy equipment service where large fastener sizes are common. Its 37-inch handle delivers the mechanical advantage needed on high-torque applications such as flange bolts, structural connections, and large mechanical assemblies. The tether-capable design supports compliance with tool drop prevention requirements in elevated or overhead work environments. The corrosion-resistant finish holds up in shop, field, and outdoor service conditions.

Key Features

• 3-7/8 inch head size for large-fastener applications
• 15-degree offset box end reduces knuckle clearance issues on flat surfaces
• 12-point box end for quick fastener engagement and operation in restricted swing arcs
• 37-inch overall length provides extended reach and high-torque leverage
• Tether capable for use in drop-prevention programs at height
• Corrosion-resistant steel construction meets ASME B107.100-2010
• Limited lifetime warranty

Compatibility

Designed as a standard combination wrench replacement or addition for industrial tooling sets requiring a 3-7/8 inch fastener size with a 15-degree offset box end configuration.

Installation Notes

This wrench is a hand tool intended for use by qualified trade and maintenance professionals. Confirm the correct fastener size before applying torque to avoid rounding. When working at elevation, attach the tether point to an approved lanyard or tool retention system in accordance with applicable fall protection and dropped-object prevention requirements. Inspect the wrench for cracks or deformation before each use and remove from service if damage is found.