General description This is a high-quality deep crank metric ring spanner designed for professional use. It features a 16mm x 17mm size and is manufactured from hardened chrome vanadium steel for durability and strength. The spanner is chrome plated to provide corrosion resistance and has accurately broached ring ends with chamfered bi-hexagon profiles for easy nut engagement. The offset at 45° allows better access to fasteners in tight spaces. Suitable for various DIY and home improvement tasks. Technical specifications Size: 16mm x 17mm Material: Hardened chrome vanadium steel Finish: Chrome plated for corrosion protection Standards: Manufactured according to DIN 838 / ISO 3318 Compatibility and accessories Compatible with standard nuts and bolts of 16mm and 17mm sizes Can be used with other tools in the same series for comprehensive toolkit solutions Installation No installation required; ready to use out of the box Usage Use to tighten or loosen nuts and bolts with 16mm and 17mm