Ring Spanner 6-22mm 8pcs

A ring spanner (or box wrench) is a closed-loop, high-torque hand tool used to tighten or loosen nuts and bolts. Featuring 6 or 12-point serrated rings at the ends, it grips all sides of a fastener to prevent slippage. Often made of chrome vanadium steel, these tools are ideal for heavy-duty automotive and industrial maintenance