... 1. plate :45Mn 2. bushing :20CrMnMo 3. roller: 10# steel 4. pins:30CrMnTi CT100 motorbike chain 1.Material:#45MN2.Has taken ... ,525HD,530HD,630HDO-Ring Chain Model:520-O,525-O,530-O,420H-O,428H-O,520H-O,525H-O,530H-OX-Ring Chain Model:428H-X ... ,520H-X,525H-X,530H-XSuper O-Ring Chain ...