power transmission drive chain 428 duplex row: 1)OEM offered 2)types:ISO/ANSI/JIS 3)suitable for many ... material:40mn2,the roller chain quality have A,B,C three grade3,Original Equipment ManufactureIndustrial chain&Motorcycle chainWe are ... 428,428H,530,630 and so on 2)Rivet:support 4sides or 2 sides 3)Colors available:nature,blue,yellow ... have any questions power transmission drive chain 428 duplex row