Browning 1/2" Chain Pitch, Chain Size 40, 10 Tooth Finished Bore Sprocket 5/8" Bore Diam, 1.618" Pitch Diam, 1.84 OD H4010X5/8 - 78338944
Equivalent to 50FB10H x 5/8, 50BS10H x 5/8

1128594 Finished Bore Sprocket - 50 / 5/8 in, Finished w/ Keyway, 0.7500 in Bore , 11 Teeth, Steel, Hardened Teeth Material
Equivalent to 50FB11 x 3/4HT

Finished Bore Sprocket - 50 / 5/8 in, Finished w/ Keyway, 0.7500 in Bore , 13 Teeth, Steel Material
50FB13H x 3/4

Browning 5/8" Chain Pitch, Chain Size 50, 15 Tooth Finished Bore Sprocket 1-1/4" Bore Diam, 3.006" Pitch Diam, 3.32 OD H5015X 1 1/4 - 78339769
Equivalent to 50FB15HT x 5/8

Split Taper Bushing Bore Roller Chain Sprocket, H Split Taper Bushing Bore, Strands: 1, Steel