42x30x7mm BB30 cartridge bearings housed in a press-fit, composite sleeve assembly for use with a BB30 crankset in a Press-Fit 30 (PF30) frame. Press-fit 30 frame design eliminates the need for internal bearing c-clips. Road sets include bearings, shields and a wavy washer. Mountain sets include bearings, shields and a spacer. Choose ceramic or stainless steel options.