BlackStar 8C90F STL - QD Sheave Tri-Power Powerband 16T10/2250R is a timing belt

16T10/2250R is a timing belt used on positive

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BlackStar 8C90F STL - QD Sheave Tri-Power Powerband 16T10/2250R is a timing beltThe BlackStar 8C90F STL is a 8 groove qd sheave, manufactured from cast iron. Requires a QD Type F Bushing (sold separately) to mount to your shaft. Specifications Part Number 8C90F STL Product Type QD Sheave Number of Grooves 8 Outside Diameter 9. 40" Material Cast Iron Approx. Weight 66. 000 lbs Belt Profile C Bushing Required QD Type F Bushing Pitch Diameter 9. 0" Compatible Belts C Bushing Required This sheave requires a QD Type F Bushing to mount