Problem Solvers Abnormal 46 Bottom Brackets. The A46 allows you to combine normally incompatible cranks and frames by accepting 24mm spindle cranks and fitting inside 46mm diameter BB shells (frames designed around PressFit 30 bottom brackets).
Fits frames with 46mm inside diameter PressFit 30 type bottom bracket shells
Includes Enduro cartridge bearings and seals
Compatible with 24mm external bearing type crank spindles, eg RaceFace X-Type, Shimano Hollowtech II