*Type: O-ring chains,X-ring chains,Non O-ring chains *Materials:Superior alloy steel The service life of O-Ring Motorcycle Chain is greatly ... 428H,520, 520H, 525, 525H, 530, 530H, 630, 630H- Color available: Natural, Blue, Brown, Nickel, Copper- Packing:Color box O-Ring Motorcycle ... Chain 420,428,428H,520,525,530,630