Fit for bottom bracket interface of ISO/English or BSA Threaded (1.37 in x 24 TPI) , shell width of 68 - 73mm and ID of 33.5-33.9mm, crank spindle diameter of 24 mm (compatible with Shimano ) or 22/24 mm (SRAM GXP). Please make sure you bike meets these sizes before purchasing.
Sealed ceramic ball bearings deliver higher speed performance and longer service life than even the best steel ball bearings
Come with spacers to accommodate the sizes mentioned above