The Chris King Headset adapter kit includes 3 individual pieces to ensure perfect headset installation each time. In the kit you will find specifically, 2 cup press cup adapters that work in conjunction with a Park Tool HHP-1 or HHP-2 headset press. The adapters work together and guarantee that the bearing and cups will not be damaged or wrinkled during the install. Keep in mind, these adapters are machined to work with these Park Tool headset presses only.
The other adapter included is used to install your fork race with a slide hammer or crown race installation tool. It precisely fits a Chris King crown race to make sure it will not get marred or deformed during the installation process. This part alone is probably worth the price of admission.