... standard:ISO/ANSI/DIN fast delivery 415 good quality motorcycle roller chain,1)material:40mn2)color : nature,black,blue,yellow3)advanced ... ,also can packing as your requirementMain products as the following1)roller chains: A series(12.7-63.5mm pitches),B series ... ,420,420H,428,428H,520,520H,6303)short pitch conveyor roller chain attachments:A-1,A-2.K-1,K-2 ...