The Enduro BBT-044 Pro Bottom Bracket Cup Socket tool kit includes the full complement of splined cups and bearing inserts to install and remove any Enduro bottom bracket. (52×16 46×12 44×16 and 41×16 splined cups along with 24mm 29mm 30mm and universal inserts). The updated design of the line of Enduro BBT Pro Cup Socket tools feature a unique design that allows you to switch between 24 29 and 30mm inner guide inserts or a universal insert depending on the application.