BlackStar 8-3V650SK STL - QD Sheave Metric Cogged 2/C160 has a top width

2/C160 has a top width of 1

so a 3/BX57 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

What is 16/B122 used for

"mpn":"915L075-Diesel"

so a 2/A93 from any major manufacturer shares the same cross-section and length and runs on the same sheaves

BlackStar 8-3V650SK STL - QD Sheave Metric Cogged 2/C160 has a top widthThe BlackStar 8 3V650SK STL is a 8 groove qd sheave for 3V section belts, manufactured from cast iron. Requires a QD Type SK Bushing (sold separately). Specifications Part Number 8 3V650SK STL Product Type QD Sheave Number of Grooves 8 Belt Profile 3V Outside Diameter 6. 50" Bushing Required QD Type SK Bushing Material Cast Iron Approx. Weight 12. 000 lbs Pitch Diameter 65. 0" Compatible Belts 3V Bushing Required This sheave requires a QD Type SK