With hexagon shaft and holes for turning, either with a spanner or a tommy bar (626 S / 26 RS-626 S), Sizes 6x7 and 8x9 with no hole, GEDORE vanadium steel 31CrV3, chrome-plated, Sizes 6x7 and 8x9 mm with no hole, Vanadium steel 31CrV3, chrome-plated