BlackStar 4C80E STL - QD Sheave 10-Groove 2500-20M-230 is a timing belt

2500-20M-230 is a timing belt used on positive

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"text": "The 7/D270 has a 1-1/4\" width

com/products/gates-2-3vx1060-super-hc-molded-notch-po-v-belt"

20/3VK1250 is a banded v-belt used on industrial drives — fans and blowers

BlackStar 4C80E STL - QD Sheave 10-Groove 2500-20M-230 is a timing beltThe BlackStar 4C80E STL is a 4 groove qd sheave, manufactured from cast iron. Requires a QD Type E Bushing (sold separately) to mount to your shaft. Specifications Part Number 4C80E STL Product Type QD Sheave Number of Grooves 4 Outside Diameter 8. 40" Material Cast Iron Approx. Weight 33. 000 lbs Belt Profile C Bushing Required QD Type E Bushing Pitch Diameter 8. 0" Compatible Belts C Bushing Required This sheave requires a QD Type E Bushing to mount