Proto J1079M Offset Box End Wrench 12 Point Double End

Product Description

The PROTO J1079M is a double-end offset box end wrench built for professional trade use in tight-clearance fastener work. It features a 12-point box end configuration on both ends, allowing engagement with standard hex fasteners where a combination or open-end wrench cannot achieve the necessary torque angle. Constructed from steel with a polished finish, this wrench is suited for mechanical, HVAC, plumbing, and electrical trades that require durable hand tools for equipment installation, service, and repair tasks. The offset design provides knuckle clearance and improved leverage in recessed or obstructed fastener locations.

This wrench is appropriate for use in both residential and commercial service environments. Technicians working on air handler cabinets, condenser units, pump assemblies, panel enclosures, and similar equipment will find the double-end offset format useful when standard straight wrenches lack the clearance angle needed to drive fasteners fully. It is a general-purpose hand tool carried by licensed tradespeople across HVAC, plumbing, and mechanical contracting work.

Key Features

• 12-point box end design engages standard hex fasteners with six contact points per side, reducing fastener rounding risk
• Double-end configuration provides two working ends in a single tool
• Offset geometry improves knuckle clearance and access in recessed fastener locations
• Steel construction for durability under torque loads typical of trade service work
• Polished finish resists surface corrosion and allows visual inspection of wear
• Non-ratcheting design for straightforward use in standard swing-clearance applications

Compatibility

Designed as an OEM-style replacement or direct addition to professional hand tool sets used across HVAC, plumbing, electrical, and mechanical service applications requiring offset box end wrench access.

Installation Notes

This wrench is a hand tool requiring no installation. Before use on energized electrical equipment, follow NFPA 70E lockout/tagout procedures. When servicing HVAC or refrigeration equipment, shut off power at the disconnect before accessing fasteners on electrical panels or mechanical components. Inspect the wrench for cracks or deformation before use and do not apply extension bars to the handle unless the tool is rated for such use.