Converts non-threaded 46mm press fit BB shells to accept most 24mm or 24/22mm spindle cranks. Offered in 24mm (Shimano, FSA, Race Face, etc), GXP 24/22mm (SRAM/Truvativ), or 30mm for installation into PF30 frames without the need for adapters. Includes anodized aluminum cups with Enduro sealed bearings. Angular contact: Enduro ABEC 5 angular contact bearings. Base: Enduro ABEC 3 sealed bearings. 148-153g depending on model