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The PROTO J112630L is a double-end box wrench with 12-point openings sized at 13/16 inches and 15/16 inches, built for professional-grade fastener work. Constructed from steel with a polished finish, this wrench delivers consistent torque transfer on hex fasteners in confined spaces where an open-end wrench cannot seat fully. The 12-point configuration provides more engagement positions per rotation than a 6-point, useful when swing arc is limited. At 1.22 pounds and 16.09 inches in length, it carries enough mass for controlled leverage without excessive fatigue. Meets ASME B107.10 standards and carries a lifetime warranty from PROTO.
This wrench suits trade professionals in HVAC, plumbing, electrical, and mechanical work who regularly turn hex-head fasteners on equipment, flanges, fittings, and structural connections. The dual-end sizing covers two closely related fractional sizes in a single tool, reducing the number of wrenches needed on a service call or at a fixed workstation. Non-ratcheting design means straightforward torque application without ratchet mechanism maintenance concerns.
Designed as an OEM-style replacement or upgrade wrench compatible with standard fractional hex fasteners requiring 13/16 inch or 15/16 inch box-end engagement in professional trade applications.
This wrench is a hand tool requiring no installation. Confirm the fastener size matches the selected end before applying torque. Always seat the box end fully on the fastener head to prevent rounding. Follow applicable torque guidelines for the fastener and assembly being serviced, and wear appropriate PPE when working in confined or energized areas.
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