Roller Chain Sprocket; 28B-1 Chain; 20 Teeth; 1 Row of Teeth; No Hardened Teeth; 307.34MM Outside Diameter; 284.14MM Pitch Diameter; A-No Hub; Rough Bore Mount; No Bushing; 44.45MM Chain Pitch; ISO Roller Chain; No 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; 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; 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; 20B-2 Chain; 20 Teeth; 2 Row of Teeth; No Hardened Teeth; 219.532MM Outside Diameter; 202.96MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 31.75MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 04B-1 Chain; 20 Teeth; 1 Row of Teeth; No Hardened Teeth; 40.7MM Outside Diameter; 38.34MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 6MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material