BlackStar D60E42H - Double Strand 60 Pitch QD Sprocket - 42 ToothThe BlackStar D60E42H is a 60 pitch double strand QD roller chain sprocket with 42 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 D60E42H Chain Pitch 60 Number of Teeth 42 Bore Type QD Hub Style QD Bushing Required QD Type E Bushing Strand Count Double Material Steel Outside Diameter