Proto J32123 Open End Wrench 21 Mm X 23 Mm Double End

Product Description

The PROTO J32123 is a double-ended open end wrench sized at 21 mm on one end and 23 mm on the other. Forged from steel with a satin finish, it delivers clean torque transfer on hex fasteners without the jaw slip common to lower-grade alloys. The 15-degree head angle offsets the working plane from the handle, giving a technician clearance to reposition and re-engage the wrench in tight spaces. Licensed mechanics, industrial maintenance techs, and HVAC-R installers who regularly work metric fasteners on compressors, condensing units, and piping flanges will find this a reliable everyday hand tool.

The J32123 suits any professional or trade environment where metric fasteners in the 21 mm and 23 mm range appear regularly. Common applications include mechanical rooms, equipment pads, rooftop units, and vehicle or fleet maintenance where standard metric wrench sets are the baseline. The dual-size format reduces the number of individual tools a tech carries to a job. The 0.61-pound weight keeps fatigue low during extended fastener work. No special setup is required — the wrench is ready to use out of packaging.

Key Features

• Dual-size heads: 21 mm and 23 mm open end on a single tool
• 15-degree head angle for clearance in confined fastener locations
• Steel construction for durability under high-torque applications
• Satin finish resists glare and provides a consistent grip surface
• Lightweight at 0.61 pounds for reduced hand fatigue
• Lifetime warranty coverage from the manufacturer

Compatibility

Designed for use with 21 mm and 23 mm metric hex fasteners across industrial, mechanical, and HVAC-R service applications.

Installation Notes

This wrench is a hand tool requiring no installation. Technicians should confirm fastener size before applying torque to avoid rounding. Always use the correct wrench size for the fastener — do not substitute an adjustable wrench where a fixed-jaw tool is specified. Clean the wrench jaws periodically to maintain full contact with fastener flats.