BlackStar 2B160SK - QD Sheave Cogged V-Belt so the Megadyne 4L970 interchanges

so the Megadyne 4L970 interchanges with Gates

What is 376J12 used for

com/s/files/1/0666/7721/files/Banded_VF_Belts_5bd2a5c3-ee71-46e2-86f9-44e33f0af477

The D&D Global 14/B148 is a standard V-belt featuring Classical B-section dimensions

"name":"D&D Global 14/BK150 Heavy-Duty V-Belt - B Section

BlackStar 2B160SK - QD Sheave Cogged V-Belt so the Megadyne 4L970 interchangesThe BlackStar 2B160SK is a 2 groove qd sheave for B section belts, manufactured from cast iron. Requires a QD Type SK Bushing (sold separately) to mount to your shaft. Specifications Part Number 2B160SK Product Type QD Sheave Number of Grooves 2 Belt Profile B Outside Diameter 16. 35" Material Cast Iron Approx. Weight 24. 000 lbs Bushing Required QD Type SK Bushing Pitch Diameter 16. 0" Compatible Belts A, B, 4L, 5L Bushing Required This sheave