Park Tool BBT-18 Bottom Bracket Tool - TruVativ
The BBT-18 Bottom Bracket Tool is used for installing and removing 8-notch Shimano XTR M950 and Truvativ ISIS Drive bottom bracket cups. Also fits 8-notch chainring adapter lockring on some Shimano and Truvativ cranksets.
Makes removing and installing the bottom bracket a breeze. Very well made, it also allows the use of a torque wrench, which is important for a quality install.