Containing 12 precision-machined bushings (in 6 sizes) to fit a variety of bottom bracket configurations, the BBP-1's quick release design will install bearings efficiently, without damaging your frame or the bearings themselves. Compatible Bottom Bracket Standards: 386EVO BB30 BB86 BB90 BB92 BB95 BB121 BMX Mid BMX Spanish OSBB PF41 Press Fit 24 Press Fit GXP BBright Direct Fit PF30 BBright Press Fit Shimano Press Fit