... ISO,ANSI,DIN 4.Hard surface/teeth ANSI C45 roller chain hard teeth transmission sprocket Feature 1, all made by ... high precision and good wear resistance. 2, surface treatment is black, galvanization, chroming and colored drawing. 3, material is A3\ ... transmission sprocket: 16B-1-36T, material: C45\A3, surface: black oxide, heat treatment, standard: DIN, ANSIOur stockCorner of our factoryPacking ...