Proto J1200H11T5 Combination Wrench Set 11 Pc Inch

Product Description

The PROTO J1200H11T5 is an 11-piece combination wrench set covering standard inch sizes from 3/8 inch through 1 inch. Each wrench features a 12-point box end with a 15-degree head offset angle and an open end on the opposite side, giving technicians two engagement options in tight spaces. The chrome plating provides corrosion resistance for shop and field use. The set stores in an included tool roll for organized transport and access on the job. It is sized and weighted for daily use by HVAC technicians, plumbers, electricians, and mechanical contractors working on equipment fasteners, flanges, and fittings.

This wrench set is suited for residential and light commercial trade work where inch-standard fasteners are common. Typical applications include tightening equipment mounting hardware, service valve packing nuts, electrical panel fasteners, and piping connections. The 11 sizes in the set cover the most frequently encountered hex fastener sizes in HVAC, plumbing, and general mechanical service. The tool roll storage makes the set practical for service vans and field kits where organization and quick access matter.

Key Features

• 11-piece inch set covering 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 7/8, 13/16, 15/16, and 1 inch sizes
• 12-point box end for reliable engagement on standard hex fasteners
• 15-degree head offset angle for clearance in confined work areas
• Chrome-plated finish for corrosion resistance and easy cleaning
• Includes tool roll for organized storage and portability
• Lifetime warranty from the manufacturer

Compatibility

Designed for use with inch-standard hex fasteners common in HVAC, plumbing, electrical, and general mechanical service applications.

Installation Notes

Use the correct wrench size to avoid rounding fastener corners. Inspect the box and open ends for wear or damage before applying high torque. Follow applicable trade codes and equipment manufacturer torque guidelines when tightening critical fasteners such as flare fittings, packing nuts, or structural mounting hardware.