The BBT9 External Cup BB Hollowtech II Tool from Park Tools is a high-performance tool perfect for bike enthusiasts and professionals alike. Expertly engineered to remove and install Shimano HollowTech II integrated bottom brackets and chainsets, it is an essential addition to your toolkit.

The tool features 16 laser cut splines that securely engage the notches of the bottom bracket cups. On the other end, it snugly fits the 8 internal splines of the crank arm adjustment cap. The precision of this design allows this double-ended tool to be used with both Shimano Hollowtech II bottom bracket cups and the crank arm adjustment caps.

Comfort is paramount with a plastic-coated handle ensuring a secure and comfortable grip as you work. Enjoy smooth operation, even during prolonged use.

Please note: this high-quality tool has a long handle and care needs to be taken during its use. Over-tightening during installation could potentially damage the tool or the component, so please use with care.

Handcrafted in the USA, this rugged tool is covered by Park Tool's legendary limited lifetime warranty, letting you buy with ultimate confidence.

To understand how it works, you can watch the video attached. Enhance your biking maintenance with the BBT9 External Cup BB Hollowtech II Tool from Park Tools, your indispensable partner for a smooth and efficient ride.