Features: Suitable for a variety of press in BB shaft specifications. (cannot be used for headsets) It can be used for disassembly and installation of bb86, bb30, bb91, bb92, PF30, etc. It can be used for the installation and disassembly of almost all ordinary hollow thread middle shaft bearings and bb86, bb30, bb91, turn bb30 to 24, bb92 and other press BB inner bearings. High strength aluminum alloy, light material, high hardness, no deformation, high stability. Anodizing treatments can effectively protect the main body of aluminum alloy, preventing corrosion and rust, and has longer service life. Equipped with a portable suitcase, it is convenient to carry and store.