BlackStar H50BS20 1 5/8 K2S - 50 Pitch Finished Bore Sprocket - 20 Tooth - 1-5/8" Bore AX com/products/continental-4060980-oets-multi-v-belt-micro-v-belt"

com/products/continental-4060980-oets-multi-v-belt-micro-v-belt"

What does the AT10US in 150AT10/1050US mean

"price":"7794

Continental 5L580

BlackStar H50BS20 1 5/8 K2S - 50 Pitch Finished Bore Sprocket - 20 Tooth - 1-5/8" Bore AX com/products/continental-4060980-oets-multi-v-belt-micro-v-belt"The BlackStar H50BS20 1 5 8 K2S is a 50 pitch Finished Bore roller chain sprocket with 20 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 5 8" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number H50BS20 1 5 8 K2S Chain Pitch 50 Number of Teeth 20 Bore