BlackStar 60BS36 1 1/2 K2S - 60 Pitch Finished Bore Sprocket - 36 Tooth - 1-1/2" BoreThe BlackStar 60BS36 1 1 2 K2S is a 60 pitch Finished Bore roller chain sprocket with 36 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 1 1 2" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 60BS36 1 1 2 K2S Chain Pitch 60 Number of Teeth 36 Bore Size 1 1 2" Minimum Bore 1" Maximum Bore 2 7 16" Bore