Park Tool BBT-9 Bottom Bracket Tool
The BBT-9 Bottom Bracket Tool is designed to remove and install Shimano Hollowtech II bottom brackets. Laser cut for a precise fit, one end of the BBT-9 securely engages the 16 notches of the bottom bracket cups, while the other end engages the 8 internal splines of the crank arm adjustment cap.
This tool compatible with any external bottom bracket like Race Face, SRAM, Shimano, FSA, etc.
I considered going with something a bit less expensive. I thought of the old adage, "Buy an expensive tool, regret it once. Buy a cheap tool, regret it every time you use it." It's a great tool, and I'm glad I picked it up.
Excellent tool. Integrated crank socket on the end. No need to look for it in your tool box.