... your sample or drawingMain products as the following1)roller chains: A series(12.7-63.5mm pitches),B series (9. ... 525-50.8mm pitches)2)motorcycle chains :415,415H,420,420H,428,428H,520, ... pitch conveyor roller chain attachments:A-1,A-2.K-1,K-2,K-3,SA-1,SA-2,SK-A,SK-24)double pitch transmissions ... .629.765063019.0511.9112.5724182.43537800 high quality industrial machine chains