Proto J1240BASD Combination Wrench 1-1/4 in 12-pt Offset

Product Description

The PROTO J1240BASD is a 1-1/4 inch combination wrench built for professional trade use in industrial, mechanical, and maintenance applications. It features a 15-degree offset head with a 12-point box end, allowing access to fasteners in tight or recessed locations. The wrench is machined from steel with a corrosion-resistant finish and is tether capable, making it suitable for work at height or in environments where dropped tools create a safety hazard. Overall length is 16-7/8 inches. At 2.16 pounds, it provides the mass needed for high-torque fastener work without being unwieldy. This wrench meets ASME B107.100-2010 standards and carries a lifetime warranty.

This wrench is used by mechanics, millwrights, pipefitters, and maintenance technicians working on heavy equipment, flanged connections, structural assemblies, and large-diameter fasteners. The 1-1/4 inch size is common in industrial piping, HVAC equipment mounting, and structural steel applications. The tether-capable design makes it appropriate for elevated work platforms, tower service, and other jobsites where tool drop protocols are enforced. The straight handle keeps hand positioning predictable during both open-end and box-end use.

Key Features

• 1-1/4 inch head size fits SAE fasteners common in industrial and heavy mechanical applications
• 15-degree offset box end allows clearance over obstructions in recessed fastener locations
• 12-point box end engages fasteners quickly and reduces ratchet arc requirements
• Tether capable for compliance with dropped-tool prevention programs on elevated jobsites
• Corrosion-resistant steel construction for use in wet or outdoor service environments
• Meets ASME B107.100-2010 hand tool standard
• Lifetime warranty from the manufacturer

Compatibility

Designed as a standard SAE combination wrench for 1-1/4 inch fasteners across industrial, mechanical, and structural applications. No specific model or system compatibility is stated by the manufacturer for this part.

Installation Notes

Combination wrenches of this size are typically used by journeyman-level tradespeople working on heavy mechanical assemblies. Before servicing any equipment, de-energize electrical systems and isolate pressure or fluid sources per lockout/tagout procedures. Use the box end for initial break-torque on stubborn fasteners and the open end for faster spinning once loose. Do not use extension bars or pipe cheaters on the handle, as this can exceed the tool's rated load and cause failure or injury.