Roller Chain Sprocket; 2-7/8" Bore; 12B-1 Chain; 12 Teeth; 1 Row of Teeth; No Hardened Teeth; 3.249" Outside Diameter; 2.898" 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; 12 Teeth; 1 Row of Teeth; No Hardened Teeth; 82.525MM Outside Diameter; 73.61MM Pitch Diameter; C-Hub Both Sides; Rough Bore Mount; No Bushing; 19.05MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 12B-1 Chain; 12 Teeth; 1 Row of Teeth; No Hardened Teeth; 82.525MM Outside Diameter; 73.61MM Pitch Diameter; A-No Hub; Rough Bore Mount; No Bushing; 19.05MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 12B-1 Chain; 12 Teeth; 1 Row of Teeth; No Hardened Teeth; 82.525MM Outside Diameter; 73.61MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 19.05MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material