Info:Tsubaki® 100SF15 QD Bushed Type B Single Pitch Roller Chain Sprocket, 2.938 in Dia Bore, 6.63 in OD, #100 Chain, 15 Teeth, 1-1/4 in Pitch, Carbon Steel
Info:Martin 100SF15H Type B Single Strand Solid Bushed Roller Chain Sprocket With Hardened Teeth, 0.5 to 2.938 in Dia Bore, 6.631 in OD, #100 Chain, 15 Teeth, 1-1/4 in Pitch, Steel
Info:Martin Saber Tooth® 100SF16H QD Bushed Type B Single Pitch Roller Chain Sprocket With Hardened Teeth, 7.034 in OD, #100 Chain, 16 Teeth, 1-1/4 in Pitch, Steel