BlackStar SF 2 7/16 STL - QD Bushing - 2 7/16" Bore 6.15/16" The BlackStar H50H21 is a

The BlackStar H50H21 is a 50 pitch Split Taper roller chain sprocket with 21 teeth

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Is 3VX1320 interchangeable with Gates 3VX1320

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BlackStar SF 2 7/16 STL - QD Bushing - 2 7/16" Bore 6.15/16" The BlackStar H50H21 is aThe BlackStar SF 2 7 16 STL is a SF series qd bushing with a 2 7 16" finished bore, precision manufactured from high grade steel. QD (Quick Disconnect) bushings feature a split taper design that allows fast, easy installation and removal without disturbing other drive components. Specifications Part Number SF 2 7 16 STL Bushing Type QD Series SF Bore Size 2 7 16" Minimum Bore 9 16" Maximum Bore 2 1 4" Outside Diameter 3. 125" Length 2 1 16" Material