Roller Chain Sprocket; 3/4" Bore; 2052 Chain; 11 Teeth; 1 Row of Teeth; Hardened Teeth; 5.01" Outside Diameter; 4.437" Pitch Diameter; A-No Hub; Finished Bore Mount; No Bushing; 1-1/4" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material