motorcycle sproket type:420,425,428,520,530 material:C45#;stainless steel;A3 ... products as the following1)roller chains: A series(12.7-63.5mm pitches),B series (9.525-50.8mm pitches)2)motorcycle ... ,2052,2060,2062,2080,2082 and with H series5)agricultural chains:C212A series,ZGS38 combine chain series,3558T, rice harvester chains attachments6)simplex ...