Hope Press Fit 41 30mm Bottom BracketHope Press Fit 41 30mm Bottom Bracket PressFit 41 30mm Bottom Bracket with Centre Tube Features: Press Fit bottom bracket for 41mm Bottom bracket shells and 30mm cranks High quality custom designed, Swiss made stainless bearings Fully sealed interal spacer tube External bearing shields 86. 5 89. 5 92 104. 5 107 121mm shell fitment options Includes converters to suit 29mm crank axles