BlackStar 80BS32 1 1/2 K2S - 80 Pitch Finished Bore Sprocket - 32 Tooth - 1-1/2" BoreThe BlackStar 80BS32 1 1 2 K2S is a 80 pitch Finished Bore roller chain sprocket with 32 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 80BS32 1 1 2 K2S Chain Pitch 80 Number of Teeth 32 Bore Size 1 1 2" Minimum Bore 1 1 4" Maximum Bore 2 15 16"