BB bearing installation and removal tool kit For use on BB30, BB86, and BB92 bottom brackets Install & remove bearing 6805 (25X37X7mm) Install & remove bearing 6806 (30X42X7mm) Install & remove Press-Fit BB R92/T86 Install & remove R30 (Converter for BB30 to BB24) Bearing Tool BB30, BB86, and BB92 BB-2430