Combination spanner Proxxon 20 mm, model 23920, chrome-plated wrench for metric fasteners

Proxxon combination spanner 20 mm (model 23920) is a hand tool designed for tightening and loosening metric nuts and bolts. The tool integrates an open-end and a boxed (ring) end in a single piece, offering access to fasteners in confined spaces and the ability to apply torque without slipping. The chrome-plated finish protects the surface against corrosion and makes the spanner easy to clean after use. Its compact, single-piece construction suits both workshop and professional environments where reliability and straightforward operation are required.

Advantages

The Proxxon 20 mm combination spanner provides two functional ends for versatile use: an open jaw for quick turning and a ring end for secure engagement and higher torque transfer. Chrome plating improves durability and simplifies maintenance while the precisely machined jaws reduce the risk of rounding fasteners. The compact length and solid construction deliver dependable leverage while remaining convenient to store in a toolbox or on a pegboard.

Suitable for

• General maintenance and repair of machinery and equipment
• Automotive repair tasks involving 20 mm metric fasteners
• Assembly and disassembly of industrial components
• Workshop and professional hand-tool sets

Key specifications

• Wrench type: combination spanner (open end + ring end)
• Nominal size: 20 mm
• Material/finish: chrome-plated steel for corrosion resistance
• Design: one-piece forged construction for stiffness and durability
• Intended fastener standard: metric nuts and bolts

How to use

Select the 20 mm spanner when the fastener head matches the nominal size. Position the open end for initial quick turning or when working in tight access areas; use the ring end to fully engage the fastener for final tightening or loosening to reduce slippage. Apply steady, controlled force and avoid sudden impacts. After use, wipe the chrome surface clean and store the spanner in a dry location to preserve the finish and mechanical fit.

Usage recommendations

Do not use the combination spanner as a hammer or pry bar. For higher torque requirements, use an appropriately sized torque tool or a longer wrench designed for that purpose. Regularly inspect the jaws for wear and replace the tool if jaw deformation occurs to avoid damaging fasteners.