... 3) Stadards:ISO/DIN/ANSI ANSI 120 A series simplex roller chains(24A-1R)1)material : 40mn2)pitch : 38.1mm3)plate ... ,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 ...