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; 28B-1 Chain; 32 Teeth; 1 Row of Teeth; No Hardened Teeth; 477.977MM Outside Diameter; 453.49MM Pitch Diameter; A-No Hub; Rough Bore Mount; No Bushing; 44.45MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 28B-1 Chain; 31 Teeth; 1 Row of Teeth; No Hardened Teeth; B-Hub One Side; Rough Bore Mount; No Bushing; 44.45MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 28B-1 Chain; 33 Teeth; 1 Row of Teeth; No Hardened Teeth; B-Hub One Side; Rough Bore Mount; No Bushing; 44.45MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 28B-1 Chain; 30 Teeth; 1 Row of Teeth; No Hardened Teeth; 449.58MM Outside Diameter; 425.24MM Pitch Diameter; A-No Hub; Rough Bore Mount; No Bushing; 44.45MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material