Duplex roller chains for ANSI 80-2 1) material:40Mn 2) plate thickness:3. ... ) color:natural,black,blue,yellow ANSI 80-2 Aseries duplex roller chains(16B-2R)1)material : 40mn2)pitch : 25.4mm3) ... also can packing as your requirementMain products as the following1)roller chains: A series(12.7-50.8mm pitches),B series ... 428,428H,520,530,630,25,25H3)short pitch conveyor roller chain attachments:A-1,A-2.K-1,K-2 ...