The park tool bbt 303 bottom bracket bearing set is designed and built to install and remove bb30 bearings park tool bbt 303 bottom bracket bearing set features designed and built to install and remove bb30 bearings direct fit pressed in bearings and a 30 mm spindle tool allows the easy and safe removal of bb30 and bbright bearings the bbt 303 set also includes installation cups to be used in conjunction with the park tool hhp