BlackStar 100E54 - 100 Pitch QD Sprocket - 54 ToothThe BlackStar 100E54 is a 100 pitch QD roller chain sprocket with 54 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket requires a QD Type E Bushing (sold separately). Specifications Part Number 100E54 Chain Pitch 100 Number of Teeth 54 Maximum Bore 3 1 2" Bore Type QD Hub Style QD Bushing Required QD Type E Bushing Strand Count Single Material Steel Outside