Description 1 B (MM) Combination spanner with same size each end Acc. to DIN 3113 Form B, ISO 3318, ISO 7738 Ring 10° offset from shaft, extra strong rings but thin wall Sizes 5 and 5.5 mm with hexagon ring, up from size 6 mm with UD profile GEDORE vanadium steel 31CrV3, chrome-plated
