... 19.050mm 3)plate thickness : 2.42mm ANSI 60 A series simplex roller chains(12A-1R)1)material : 40mn2 ... color : nature,black,blue,yellow5)factory price 6)standard:ISO/ DIN /ANSI7)good quality with best delivery time8) ... as your requirementMain products as the following1)roller chains: A series(12.7-50.8mm pitches),B series ( ... ,25,25H3)short pitch conveyor roller chain attachments:A-1,A-2.K-1,K-2,SA-1,SA ...