Proto JSCR12T 3/8 Inch Ratcheting Combination Wrench

Product Description

The PROTO JSCR12T is a 3/8 inch ratcheting combination wrench designed for fastener work in tight spaces where a standard open-end or box-end wrench limits efficiency. The 12-point box end engages hex fasteners at multiple positions, reducing the arc needed to turn a fastener. A straight handle and 0 degree head offset keep the working profile low, useful in confined installations. The chrome finish provides corrosion resistance for shop and field use. At 0.12 pounds and 6.25 inches overall length, it fits standard tool rolls and is tether capable for elevated or overhead work environments.

This wrench is suited for residential and commercial HVAC, plumbing, and electrical work where 3/8 inch fasteners appear on equipment panels, pipe fittings, electrical enclosures, and mechanical assemblies. The ratcheting box end speeds repetitive fastening without removing and repositioning the tool. Tether capability makes it appropriate for rooftop units, elevated platforms, and any jobsite with drop-hazard requirements. It is intended for use by licensed tradespeople and experienced technicians who require ASME-compliant hand tools.

Key Features

• Ratcheting 12-point box end reduces repositioning on repetitive fastener turns
• 0 degree head offset with straight handle for low-profile access
• Tether capable for elevated and drop-hazard work environments
• Chrome finish provides corrosion resistance for field and shop use
• ASME-compliant construction for professional trade applications
• Compact 6.25 inch overall length fits standard tool rolls and pouches

Compatibility

Designed for use with standard 3/8 inch hex fasteners across HVAC, plumbing, electrical, and general mechanical service applications.

Installation Notes

Suitable for use by any trade professional working with 3/8 inch fasteners on equipment, panels, or mechanical assemblies. Always de-energize electrical equipment and shut off fluid systems before using hand tools in proximity to live components. When using in a tethered configuration, attach the approved tether lanyard to the designated tether point before beginning work. Do not use this wrench as a striking tool or apply extension cheater bars to the handle.