PF30 TO EXTERNAL - Specifically designed for installing 24.00mm spindle diameter cranks (Shimano, Etc.) in BB30 (42mm ID BB shell) frames without the need for any adapters. - Note: FSA MegaExo spindles can be between 24.00mm and 24.07mm in diameter. If your FSA spindle is 24.07mm, this BB will not work! - BB Shell Type PF30 - BB Shell Width: 68/73mm - Crank Spindle Diameter: 24mm - Interface: PF30 - Cup Diameter: 46mm - BB Bearing: ABEC 3 - Primary Color: Black