BRT-040 29/30 – Split expanding bearing puller for 29 & 30mm ID BB bearings – This is an indirect replacement for the split expanding puler found in the BRT-016 DUB kit, that is designed to expand to grab the bearing from the inside to allow it to be pressed out into the receiver cup while ther BB is still in the bike. This updated part works with both 29mm and 30mm ID bearings, and is sized internally to work with the BRT-040 Expander or the expander found in the BRT-003 toolkit.