Groz RSP/SF/8-9/S Ring Spanner 8 x 9 mm

The Groz RSP/SF/8-9/S is a double-ended ring spanner sized 8 x 9 mm, part of Groz's metric ring spanner range. It is cold stamped from chrome vanadium (31CrV3) steel and conforms to DIN 838, with an elliptical ring pattern at each end and a super drive broach that grips the flats squarely, cutting down corner rounding and allowing higher torque to be applied. The spanner is heat treated to 42-48 HRC for a longer working life, finished in a rust-proof matte coating, and carries its size laser-etched into both ends for quick identification on the bench.