Power transmission chain 10A: 1)OEM offered 2)manufacture type:A /B/JIS series 3)hot sale market:mid east,south ... ,etc 1,chain material:40mn2,the roller chain quality have A,B,C three grade3,Original Equipment ManufactureIndustrial chain&Motorcycle chainWe ... kinds of motorcycle chains ,satandard or OEM are accepted 1)Type :420,420H,428,428H,530,630 and so on 2 ...