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. (52x16 46x12 44x16 and 41x16 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.Features a unique design that allows you to switch between 24 29 and 30mm inner guide inserts or a universal insert depending on the applicationThe inner guide inserts simply snap-in to keep everything straight while installing and removing bottom bracket cupsEach snap-in insert features a 3/8 inch drive for use with a torque wrench or breaker barSpline cup options include: 52x16 (T47 & Torqtite BB386 and PF30) 46x12 (BSA 29&30) 44x16 (BSA24/FC32) & 41x16 (Maxhit BSA24/FC25)The entire tool is precision manufactured of the same 6061-T6 aluminum as Endura bottom bracket cups to ensure secure no-mar cup installation and removal