Duplex roller chains for ANSI 80-2 1) material:40Mn 2) plate thickness:3.25mm 3) color:natural,black,blue,yellow ANSI 80-2 Aseries duplex roller chains( ... can packing as your requirementMain products as the following1)roller chains: A series(12.7-50.8mm pitches),B series (9 ... conveyor roller chain attachments:A-1,A-2.K-1,K-2,SA-1,SA-2,SK-A,SK-2 etc4)double pitch transmissions v& conveyor chains :2040 ...