BlackStar 50BS21 2 K2S - 50 Pitch Finished Bore Sprocket - 21 Tooth - 2" Bore 3VX so a 1200XXH500 from any

so a 1200XXH500 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

com/s/files/1/0666/7721/products/Light-Duty-AK-BK-Single_69dfdc77-e3c8-4f99-9d8c-f32b7224d2f4

531 in Sheave Angle 40° Number of Bands 3 Length 105 in (Outside Circumference) Construction Synthetic Rubber

Megadyne BB140 Double V-Belt

BlackStar 50BS21 2 K2S - 50 Pitch Finished Bore Sprocket - 21 Tooth - 2" Bore 3VX so a 1200XXH500 from anyThe BlackStar 50BS21 2 K2S is a 50 pitch Finished Bore roller chain sprocket with 21 teeth, precision manufactured from SAE 1045 steel and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 2" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 50BS21 2 K2S Chain Pitch 50 Number of Teeth 21 Bore Size 2" Minimum Bore 3 4" Maximum Bore 1 5 8" Bore Type Finished