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The PROTO J1241M is a combination wrench designed for heavy-duty fastener work in industrial, mechanical, and maintenance trade applications. It features a 41 mm head size with a 15-degree offset angle on a 12-point box end, giving technicians improved clearance in tight or obstructed bolt patterns. The straight handle measures 23 inches overall, providing extended reach and leverage on large fasteners. Constructed from steel with a satin finish, the wrench meets ASME B107.100 standards and carries a limited lifetime warranty. It is tether capable for use in elevated work environments where dropped-tool prevention is required.
This wrench is suited for heavy equipment maintenance, industrial machinery service, large-vehicle repair, and structural assembly work where 41 mm fasteners are common. The 15-degree offset box end allows the handle to clear surrounding components when driving fasteners in recessed or closely spaced positions. The satin finish reduces glare and resists corrosion, making it practical for both shop and field use. Licensed tradespeople in mechanical, millwright, and fleet maintenance roles are the primary users of this tool.
Designed as a standard combination wrench for use with 41 mm fasteners in industrial, fleet, and heavy equipment maintenance applications.
This wrench is intended for use by qualified mechanical tradespeople. Inspect the wrench for cracks or deformation before each use and do not use a damaged tool. When working on machinery or vehicles, follow lockout/tagout procedures before applying torque to fasteners. Do not use extension bars or cheater pipes on the handle, as overloading can damage the wrench and cause injury.
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