Combination wrench Proline 35620 — 20 mm, 240 mm length, single-piece

Proline 35620 is a single-piece combination wrench with a 20 mm working size and a total length of 240 mm. The tool integrates an open-end jaw and a closed ring end to provide two gripping options for fastening and loosening nuts and bolts. Manufactured from forged steel with a satin chromium-plated finish, this wrench is designed to meet dimensional requirements of the German DIN 3113 standard and offers increased torque capacity compared with older standards.

Advantages

The forged construction and satin chromium plating improve strength and resistance to surface corrosion while maintaining a professional finish. The one-piece design ensures reliable force transfer and reduces the risk of breakage under load. Compliance with DIN 3113 dimensional requirements provides consistent fit on metric fasteners, and the higher maximum torque capacity—up to 60% greater than that specified by some earlier standards—allows safer application of higher turning forces within the tool’s rated limits.

Suitable for

• Automotive repair and maintenance tasks requiring a 20 mm wrench
• Assembly and disassembly of machinery and equipment with 20 mm fasteners
• General mechanical and maintenance work in workshops and industrial settings
• Situations where both open-end access and ring-end engagement are needed

Key specifications

• Working size: 20 mm
• Total length: 240 mm
• Construction: single-piece, forged steel
• Finish: satin chromium plating for corrosion resistance
• Standards: dimensionally compliant with German DIN 3113
• Torque capacity: up to 60% higher maximum torque compared with older DIN 899 and ANSI benchmarks

How to use

Select the 20 mm combination wrench when the fastener matches the tool size. Position the open end for quick engagement in tight spaces or use the ring end to engage the fastener more securely and reduce the risk of rounding. Apply steady, controlled force and avoid sudden impacts; use the wrench within its rated capacity. For stubborn fasteners, ensure proper support and use appropriate leverage without extending the handle with improvised tools.

Usage recommendations

Keep the wrench clean and dry after use and store it in a tool tray or rack to prevent corrosion and mechanical damage. Inspect the working faces regularly for wear or deformation and replace the tool if the ring or jaws show signs of rounding or cracking. When performing high-torque operations, use correct technique and consider using a torque wrench for final tightening to achieve specified torque values.