Roller Chain Sprocket; 12B-1 Chain; 20 Teeth; 1 Row of Teeth; Hardened Teeth; 131.724MM Outside Diameter; 121.78MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 19.05MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 1-3/4" Bore; 12B-1 Chain; 20 Teeth; 1 Row of Teeth; Hardened Teeth; 5.186" Outside Diameter; 4.794" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 3/4" Chain Pitch; ISO Roller Chain; Keyway; Steel Material

Roller Chain Sprocket; 1-5/8" Bore; 12B-1 Chain; 20 Teeth; 1 Row of Teeth; Hardened Teeth; 5.186" Outside Diameter; 4.794" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 3/4" Chain Pitch; ISO Roller Chain; Keyway; Steel Material

Roller Chain Sprocket; 1-1/4" Bore; 12B-1 Chain; 20 Teeth; 1 Row of Teeth; Hardened Teeth; 5.186" Outside Diameter; 4.794" Pitch Diameter; B-Hub One Side; Finished Bore Mount; No Bushing; 3/4" Chain Pitch; ISO Roller Chain; Keyway; Steel Material

Roller Chain Sprocket; 12B-1 Chain; 20 Teeth; 1 Row of Teeth; No Hardened Teeth; 131.724MM Outside Diameter; 121.78MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 19.05MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material