Review on Park Tool BBT 22 Shimano Cartridge by Larry Sabey

This key is required to remove the bottom bracket lock without damaging the bottom bracket or the bike. It will be your best friend to unscrew the bottom bracket locknut without damage. The wrench fits snugly and snugly. However, due to the shallow depth of the bottom bracket locknut, this wrench must be inserted as deeply and evenly as possible to avoid loosening when attempting to remove the bottom bracket locknut. I figured it was best to use the pry bar and socket to loosen the lock, tapping the pry bar with a rubber mallet to loosen the lock nut.