Proto JSCVM21T 21mm Ratcheting Combination Wrench

Product Description

The PROTO JSCVM21T is a 21 mm ratcheting combination wrench designed for professional trade use in mechanical, industrial, and maintenance applications. It features a 15-degree offset head with a 12-point box end and an open end on the opposite side. The wrench is ratcheting and reversible, allowing fastener engagement without removing and repositioning the tool. Built from steel with a chrome finish, it measures 11-7/16 inches overall length and is rated to ASME B107.100-2010. The tether-capable design makes it suitable for work-at-height or drop-hazard environments where tool retention is required.

This wrench is suited for mechanical technicians, millwrights, pipefitters, and maintenance professionals working on equipment with 21 mm hex fasteners. Typical applications include machinery assembly and disassembly, HVAC equipment service, pump and compressor maintenance, and structural fastener work. The ratcheting box end is useful in confined spaces where full-arc swing is not possible. The straight handle and chrome finish support clean wiping and visual inspection between uses.

Key Features

• Ratcheting and reversible box end for efficient fastener driving without tool removal
• 12-point box end engages hex fasteners at multiple positions in tight spaces
• 15-degree head offset reduces knuckle clearance issues in confined work areas
• Tether-capable design supports tool retention lanyards for drop prevention
• Chrome finish on steel construction provides corrosion resistance and easy cleaning
• Meets ASME B107.100-2010 standard for combination wrenches

Compatibility

Designed for use with 21 mm hex fasteners in standard combination wrench applications across industrial, mechanical, and trade service environments.

Installation Notes

This wrench is installed and used by licensed mechanics, millwrights, and trade professionals. Before service, ensure the work area is de-energized or de-pressurized as appropriate for the system being serviced. When using in tethered applications, confirm the lanyard attachment point and weight rating meet site safety requirements. Do not use as a striking or prying tool.