Open-end box wrench Proxxon 22 mm Slimline model PR23922, slim profile for tight spaces

Proxxon 22 mm Slimline model PR23922 is a combination open-end and box wrench engineered for working with 22 mm fasteners in confined or hard-to-reach spaces. The tool features a reduced-profile head and a slim body that minimize obstruction around nuts and bolts while maintaining the contact area required for a secure grip. It is produced by Proxxon and intended for precision maintenance tasks where space and access are limited.

Advantages

The slim profile provides improved access in tight assemblies and around closely spaced components without sacrificing torque transfer. The combination design offers the versatility of an open-end for quick placement and a box end for more secure, full-contact turning. Durable construction and precise dimensional tolerances ensure reliable fit on 22 mm fasteners and reduce the risk of rounding. The compact form factor is convenient for storage and use in toolkits for mechanics and technicians.

Suitable for

• Mechanical maintenance and repair in confined spaces
• Bicycle repairs and component adjustments
• Automotive service tasks where access around fittings is restricted
• Assembly and disassembly of machinery with closely spaced fasteners

Key specifications

• Wrench type: combination of open-end and box end
• Nominal size: 22 mm working profile
• Design: slimline / reduced profile for tight spaces
• Ends: open-end for quick access, box end for secure, full-contact turning
• Construction: hardened tool steel with precision-machined jaw geometry
• Intended use: manual hand tool for turning hexagonal fasteners

How to use

Select the 22 mm opening and position the open-end or box end over the fastener. Use the open-end to quickly seat the wrench on the nut or bolt where frequent repositioning is needed, and switch to the box end when greater contact and torque are required. Apply steady manual force, keeping the wrench aligned with the fastener axis to avoid slipping or rounding. The slim profile aids placement in narrow gaps; exercise care to ensure full engagement of the jaws before applying higher force.

Usage recommendations

For safe and effective use, check that the wrench fully engages the fastener and avoid applying impact or excessive bending forces. Use appropriate hand protection if working in oily or sharp-edged environments. Store the wrench in a dry place to prevent corrosion and periodically inspect the jaw faces for wear to maintain reliable fit and performance.