Rings deep offset, strong but thin walls, UD profile, Acc. to DIN 838, ISO 3318, ISO 1085, ISO 10104, GEDORE vanadium steel 31CrV3, chrome-plated, Vanadium steel 31CrV3, chrome-plated, Satin non-glare finish, Carefully forged and professionally machined: Ring: thin-walled, 5° deep offset from shaft, with UD profile for gentle transmission of force, High