One end of the BBT-9 securely engages the 16 notches of the bottom bracket cups, the other end of the tool engages the 8 internal splines of the crank arm adjustment cap. The BBT-9 also fits the rotor disc lockrings using 16 external notches.
Shimano Saint M825 2013 Crank Arms. The Saint Hollowtech II cranks are forged premium Duraluminum to form a light weight, extremely strong crank set. Gravity riding has progressed with bikes being lighter and trails getting faster. Saint has evolved with this providing a stiff, strong and durable HollowTech II crank set reinforced in all the ways that most extreme chainsets are not. These industry
Park Tool Hollowtech II BB And Crank Arm Tool Workshop Tools on other UK sites