... :20CrMnMo 3. roller: 10# steel 4. pins:30CrMnTi CT100 motorbike chain 1.Material:#45MN2.Has taken measures to better antirust3.Long ... O,428H-O,520H-O,525H-O,530H-OX-Ring Chain Model:428H-X,520H-X,525H-X,530H-XSuper ... O-Ring Chain Model:520-SO,525-SO,530-SO,420H-SO, ... Inner(mm)Thickness Outer(mm)Tensile Strength(KN)Weight(kg/m)42012.7Curled6.353.9614.77.71.51.5160.5542812. ...