Roller Chain Sprocket; 1-5/8" Bore; 35 Chain; 36 Teeth; 1 Row of Teeth; Hardened Teeth; 4.511" Outside Diameter; 4.303" Pitch Diameter; A-No Hub; Finished Bore Mount; No Bushing; 3/8" Chain Pitch; ANSI Roller Chain; No Keyway; Steel Material