Proto J1182T Offset Box End Wrench 3/8 X 7/16 in 12 Pt

Product Description

The PROTO J1182T is a double-end offset box end wrench sized at 3/8 x 7/16 inches with a 12-point configuration on each end. The offset design angles the wrench head away from the handle, providing knuckle clearance and better access to fasteners in tight or recessed spaces. The box end fully encloses the fastener, reducing the risk of rounding. Constructed from steel, this wrench is built for repetitive use in professional shop and field environments. Licensed mechanics, HVAC technicians, plumbers, and electricians reach for offset box end wrenches when standard open-end or combination wrenches cannot fit the work envelope.

The J1182T is suited for general mechanical and trade service work where two closely related fastener sizes appear on the same assembly. The 3/8-inch and 7/16-inch ends cover fastener sizes common in residential and light commercial HVAC equipment, refrigeration units, plumbing rough-in hardware, and electrical panel work. The reversing capability adds flexibility when working in confined spaces where swing arc is limited, allowing the technician to flip the wrench without repositioning entirely. Both ends feature a 12-point geometry, which allows engagement at 30-degree increments for faster repositioning in tight quarters.

Key Features

• Double-end design provides 3/8-inch and 7/16-inch box openings in a single tool
• 12-point geometry allows engagement every 30 degrees for use in restricted swing areas
• Offset head angles fastener contact away from the handle for knuckle clearance
• Reversing capability adds versatility without repositioning the wrench
• Steel construction for durability under repeated torque loads

Compatibility

Designed as a general-purpose offset box end wrench suitable for standard SAE fasteners in 3/8-inch and 7/16-inch sizes across HVAC, plumbing, electrical, and mechanical service applications.

Installation Notes

Power down or de-energize any equipment before working on fasteners in live electrical or HVAC assemblies. Confirm the wrench end seats fully on the fastener before applying torque to avoid rounding. Inspect the wrench for cracks or deformation before each use, and do not use extension pipes or cheater bars on standard hand wrenches.