Wheels Mfg BB30 Outboard Threaded Bottom Bracket - ABEC-3 Bearings - Converts BB30 shells (42mm ID- 68mm road/73mm mountain) to accept most 24mm or 24/22mm spindle cranks - Offered in 24mm (Shimano, FSA, Race Face, etc) or GXP 24/22mm (SRAM/Truvativ) for installation into BB30 frames without the need for adapters - Includes anodized aluminum cups with Enduro sealed bearings - Bearings: Enduro ABEC 3 sealed bearings - Shell: BB30 - Width: 68/73mm