General description This is a double-ended ring spanner designed for professional and DIY use. It features two different sizes on each end for versatile applications. Made from durable chrome vanadium steel with a satin finish, it offers strength and corrosion resistance. Technical specifications Size: 8 x 9mm Length: 183mm Material: Chrome vanadium steel Finish: Satin Standards: DIN 838 Compatibility and accessories Compatible with fasteners requiring 8mm and 9mm openings Installation No installation required; simply select the appropriate end for your fastener and turn. Usage Use to tighten or loosen nuts and bolts with 8mm or 9mm sizes. Apply force evenly to avoid damaging fasteners.