... .produce as your sample or drawingMain products as the following1)roller chains: A series(12.7-63.5mm pitches),B series ... ,415H,420,420H,428,428H,520,520H,6303)short pitch conveyor roller chain attachments:A-1,A-2.K-1,K-2,K ... .422.215226.629.765063019.0511.9112.5724182.43537800 Short pitch conveyor chain with extended pins