BlackStar 100BS21 1 15/16 K2S - 100 Pitch Finished Bore Sprocket - 21 Tooth - 1-15/16" Bore T5US "text": "The 9/C210 is used

"text": "The 9/C210 is used for high-shock and high-vibration drives

The Gates 10/3V1250 Super HC PowerBand Belts 938510125 is a banded V-belt featuring Narrow wedge 3V dimensions

so the 6/C85 interchanges with Gates 6/C85

com/s/files/1/0666/7721/products/Cogged_V_Belt_b4431386-2d5c-4c49-8422-5b662d910800

so the AA83 interchanges with Gates AA83

BlackStar 100BS21 1 15/16 K2S - 100 Pitch Finished Bore Sprocket - 21 Tooth - 1-15/16" Bore T5US "text": "The 9/C210 is usedThe BlackStar 100BS21 1 15 16 K2S is a 100 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 1 15 16" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number 100BS21 1 15 16 K2S Chain Pitch 100 Number of Teeth 21 Bore Size 1 15 16" Minimum Bore 1 7 16" Maximum