BlackStar J 2 3/4 STL - QD Bushing - 2 3/4" Bore Power Curve Belt 25T10/560US is a standardized industry

25T10/560US is a standardized industry size

25AT5/825US has a 5 mm tooth pitch

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BlackStar J 2 3/4 STL - QD Bushing - 2 3/4" Bore Power Curve Belt 25T10/560US is a standardized industryThe BlackStar J 2 3 4 STL is a J series qd bushing with a 2 3 4" 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 J 2 3 4 STL Bushing Type QD Series J Bore Size 2 3 4" Minimum Bore 1" Maximum Bore 3 3 4" Outside Diameter 5. 148" Length 4 1 2" Material Steel Approx.