Box end wrench Proxxon 23888, chromium-vanadium steel, 17x19 mm, 216 mm length

Proxxon 23888 is a double box end wrench manufactured from chromium‑vanadium steel with a chrome finish. The tool combines two common metric sizes, 17 mm and 19 mm, in a single 216 mm length design, offering reach and leverage for fastening and loosening hex head nuts and bolts. The wrench features a smooth, easy‑to‑hold finish with double nickel‑plating and single chrome‑plating for surface protection and corrosion resistance. Size markings are laser‑inscribed for clear readability, and the slim, polished heads provide access in tighter spaces while maintaining torque values that exceed DIN/ISO requirements.

Advantages

The forged chromium‑vanadium construction ensures strength and durability under repeated mechanical stress, while the polished, slim heads reduce interference in confined areas. Double nickel and single chrome plating protect the surface against corrosion and wear and give a smooth feel for comfortable handling. Laser‑inscribed size markings remain legible through heavy use, and calibrated manufacturing with tight dimensional tolerances delivers reliable fit and consistent torque transfer.

Suitable for

• Automotive repair and maintenance
• Mechanical assembly and disassembly
• General maintenance and workshop tasks
• Tight spaces where a combination of reach and thin head profile is needed

Key specifications

• Material: chromium‑vanadium steel
• Finish: double nickel‑plated and single chrome‑plated surface
• Sizes: 17 mm and 19 mm
• Total length: 216 mm
• Head profile: slim, thin‑walled polished heads for access in confined spaces
• Markings: laser‑inscribed size indicators in millimetres
• Manufacturing tolerances: calibrated and checked to tighter than DIN/ISO requirements

How to use

Select the correct end (17 mm or 19 mm) to match the nut or bolt head. Place the box end fully over the fastener to ensure a proper engagement and reduce risk of rounding. Apply steady torque using the wrench shaft, keeping force in line with the handle to avoid side loading. For loosening seized fasteners, use controlled force and, if necessary, apply penetrating lubricant and allow it to work before repeating the procedure. After use, wipe the surface clean and store the wrench in a dry place.

Usage recommendations

The tool is designed for manual operation only; do not use with impact tools or excessive leverage such as cheater bars. Regularly inspect the heads and markings for wear, clean after use, and keep the wrench dry to preserve the plated surface and ensure long service life.