BlackStar 80BS43 1 3/4 K2S - 80 Pitch Finished Bore Sprocket - 43 Tooth - 1-3/4" Bore QD-W The D&D Global 164XL1771 is

The D&D Global 164XL1771 is a synchronous timing belt with XL-pitch profile

"sku":"XPA1582-PIX"

so a 16AT10/840US from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

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BlackStar 80BS43 1 3/4 K2S - 80 Pitch Finished Bore Sprocket - 43 Tooth - 1-3/4" Bore QD-W The D&D Global 164XL1771 isThe BlackStar 80BS43 1 3 4 K2S is a 80 pitch Finished Bore roller chain sprocket with 43 teeth, precision manufactured from SAE 1045 steel 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 80BS43 1 3 4 K2S Chain Pitch 80 Number of Teeth 43 Bore Size 1 3 4" Minimum Bore 1 3 8" Maximum Bore 2 15 16"