Info:Martin 200A54 Type A Single Strand Solid Reboreable Roller Chain Sprocket, 1.5 to 40.393 in Dia Bore, 44.423 in OD, #200 Chain, 54 Teeth, 2-1/2 in Pitch, Steel
Info:Browning® 1124973 Single Strand Minimum Bore Type B Roller Chain Sprocket, 1-1/2 in Dia Bore, 9.2 in OD, #200 Chain, 10 Teeth, 2-1/2 in Pitch, Steel