Roller Chain Sprocket; 3-15/16" Bore; 81X Chain; 20 Teeth; 1 Row of Teeth; No Hardened Teeth; 17.603" Outside Diameter; 16.678" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 2-39/64" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material

Roller Chain Sprocket; 1-15/16" Bore; 100-2 Chain; 20 Teeth; 2 Row of Teeth; Hardened Teeth; 8.643" Outside Diameter; 7.99" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1-1/4" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material

Roller Chain Sprocket; 2-7/8" Bore; 100-2 Chain; 20 Teeth; 2 Row of Teeth; Hardened Teeth; 8.643" Outside Diameter; 7.99" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1-1/4" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material

Roller Chain Sprocket; 3-1/4" Bore; 100-2 Chain; 20 Teeth; 2 Row of Teeth; Hardened Teeth; 8.643" Outside Diameter; 7.99" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1-1/4" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material

Roller Chain Sprocket; 3-5/8" Bore; 120-2 Chain; 20 Teeth; 2 Row of Teeth; Hardened Teeth; 10.371" Outside Diameter; 9.588" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 1-1/2" Chain Pitch; ANSI Roller Chain; Keyway; Steel Material