BlackStar 60B21 - 60 Pitch B-Hub Sprocket - 21 Tooth 38mm What is the Megadyne 2/3V1060

What is the Megadyne 2/3V1060 used for

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What is 305K10 used for

BlackStar 60B21 - 60 Pitch B-Hub Sprocket - 21 Tooth 38mm What is the Megadyne 2/3V1060The BlackStar 60B21 is a 60 pitch B Hub roller chain sprocket with 21 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. Specifications Part Number 60B21 Chain Pitch 60 Number of Teeth 21 Minimum Bore 3 4" Maximum Bore 2 3 4" Bore Type Plain Bore Hub Style B Hub Strand Count Single Material Steel Outside Diameter 5. 43" Pitch Diameter 5. 033" Approx. Weight 5. 10 lbs Cross