Proto J12100 Combination Wrench 3-1/8 in 15 Deg Offset

Product Description

The PROTO J12100 is a full-size combination wrench built for heavy-duty fastener work in industrial, mechanical, and maintenance environments. It features a 3-1/8 inch head size with a 15-degree offset angle on the box end, allowing clearance over obstructions in tight or recessed fastener locations. The wrench measures 34 inches overall and weighs 17.84 pounds, giving it the mass and leverage needed for large-fastener applications. Constructed from steel with a corrosion-resistant finish, the J12100 is tether capable for use in elevated or drop-sensitive work zones. It conforms to ASME B107.100-2010 and carries a limited lifetime warranty.

This wrench is suited for industrial maintenance, heavy equipment service, structural assembly, and facilities work where large-format fasteners are common. The tether-capable design makes it appropriate for work at height, tower service, and overhead applications where dropped-tool protocols are enforced. The 12-point box end engages hex fasteners with multiple entry positions, reducing repositioning time in confined or partially accessible spaces. Licensed millwrights, industrial mechanics, and maintenance technicians are the primary users of this tool class.

Key Features

• 3-1/8 inch head size for large industrial fasteners
• 15-degree offset box end provides clearance over obstructions
• 12-point box end engagement for multiple wrench entry positions
• Tether capable design meets dropped-tool safety requirements for elevated work
• Corrosion-resistant steel construction for long service life
• Meets ASME B107.100-2010 standard
• Limited lifetime warranty

Compatibility

Designed for use with 3-1/8 inch hex fasteners in industrial and heavy mechanical applications where a standard combination wrench profile is required.

Installation Notes

This wrench is intended for use by qualified mechanics and industrial maintenance technicians. Before applying torque to any fastener, confirm the fastener size and ensure the wrench is fully seated on the hex to prevent rounding. When used in tethered applications, attach an approved tool lanyard through the tether point before working at elevation. Inspect the wrench for cracks or deformation before each use and remove from service if damage is found.