General description This is a professional-quality deep crank metric ring spanner designed for precise and efficient tightening or loosening of nuts and bolts in hard-to-reach areas. Technical specifications Size: 9mm x 11mm Material: Chrome vanadium steel Finish: Chrome plated for corrosion resistance Manufactured according to DIN 838 / ISO 3318 standards Compatibility and accessories Compatible with metric nuts and bolts within the 9mm and 11mm sizes Installation Use with compatible ratchets or handles designed for ring spanners Usage Ideal for professional and DIY applications involving tightening or loosening nuts and bolts Suitable for use in confined or hard-to-reach spaces due to its deep and offset design Other information Professional quality, long series manufactured from chrome vanadium steel, hardened, tempered, and chrome plated for corrosion protection Ring ends are accurately broached with chamfered bi-hexagon profiles for easy nut location and are offset at 45° Sold