Open-end wrench Proxxon 23 241, chromium-vanadium steel, sizes 8 mm and 9 mm, 1 pc

Proxxon 23 241 is an open-end wrench manufactured from chromium-vanadium (CrV) steel, supplied as a single-piece tool with two working sizes: 8 mm and 9 mm. The compact, double-ended design allows access to small fasteners in tight spaces. Surface protection includes double nickel plating and a matte chrome finish for corrosion resistance and long service life. Sizes are laser-marked for clear, durable identification. The wrench incorporates a high-alloy special-steel ratcheting ring with 72 teeth that enables ratcheting action with minimal movement, useful when swing clearance is limited.

Advantages

The Proxxon open-end wrench combines the strength and wear resistance of CrV steel with corrosion-resistant surface treatments. Its 72-tooth inner gear ring provides fine-step ratcheting, allowing operation with minimal oscillation angles. The compact two-size layout (8 mm and 9 mm) reduces the need to carry multiple individual spanners for small fasteners. Laser-etched size markings remain legible during extended use.

Suitable for (tasks / use cases)

• Light mechanical and maintenance work on engines and assemblies
• Work on automatic transmissions, rear axles and other confined automotive areas
• Electrical and electronic equipment maintenance where space is limited
• Hobby and DIY projects that involve small nuts and bolts
• Workshop settings and routine service tasks requiring reliable small wrenches

Key specifications

• Material: chromium-vanadium (CrV) steel
• Working sizes: 8 mm and 9 mm
• Finish: double nickel plating with matte chrome topcoat
• Ratcheting mechanism: 72-tooth inner gear ring made of high-alloy special steel
• Marking: durable laser-etched size markings
• Supply format: single-piece open-end wrench

How to use

Select the end (8 mm or 9 mm) that matches the nut or bolt head. Place the open end onto the fastener and apply steady turning force in the required direction. Use the ratcheting action by making small back-and-forth movements when full swing is not available; the 72-tooth gear ring allows operation with minimal movement. Avoid excessive side loading or impact forces to preserve the ratcheting mechanism and the open jaw profile. After use, clean off debris and store in a dry tool box to maintain the protective finish.

Usage recommendations

For work in confined areas such as engine compartments or transmissions, use the ratcheting function to maintain control with limited swing. Do not use the open-end wrench as a hammer or pry bar. For higher torque requirements, choose an appropriate sized box-end or torque-rated tool to prevent damage to fasteners and the wrench.