... thickness : 2.42mm ANSI 60 A series simplex roller chains(12A-1R)1)material : 40mn2)pitch : ... packing as your requirementMain products as the following1)roller chains: A series(12.7-50.8mm pitches ... 520,530,630,25,25H3)short pitch conveyor roller chain attachments:A-1,A-2.K-1,K ... ,2080H5)agricutual chain:ZGS38 series, 212A(2060) with attachment series, 6)simplex,double,triplex chainsThe chain technic is ...