BlackStar H80BS18 1 3/4 K2S - 80 Pitch Finished Bore Sprocket - 18 Tooth - 1-3/4" Bore Light Duty Sheaves - Bored-to-Size so a 2/A121 from any

so a 2/A121 from any major manufacturer shares the same cross-section and length and runs on the same sheaves

so a 20/3V1520 from any major manufacturer shares the same cross-section and length and runs on the same sheaves

What is 30T10/610US used for

Prefer our Diesel Belting equivalent: 5/3VX500 Banded Cogged V-Belt 3/8in x 50in 5 Bands

com/s/files/1/0666/7721/products/Banded_Kevlar_V_Belt_cc029b32-ea8e-40c8-ac62-ab49985261e9

BlackStar H80BS18 1 3/4 K2S - 80 Pitch Finished Bore Sprocket - 18 Tooth - 1-3/4" Bore Light Duty Sheaves - Bored-to-Size so a 2/A121 from anyThe BlackStar H80BS18 1 3 4 K2S is a 80 pitch Finished Bore roller chain sprocket with 18 teeth, precision manufactured from SAE 1045 steel with induction hardened teeth for extended wear life and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 1 3 4" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number H80BS18 1 3 4 K2S Chain Pitch 80 Number of Teeth 18 Bore