Build Driver

Build Driver (ビルドドライバー) is Kamen Rider Build's personal transformation device, later used by Kamen Rider Claws. It uses Full Bottles as its primary collectible device.

Transformation
Kamen Rider Build transforms by inserting two Full Bottles into the Build Driver and turning the crank. Any pair of organic and inorganic Full Bottles may be used, but certain combinations create especially powerful Best Match forms.

Kamen Rider Claws transforms by inserting the Dragon Full Bottle into the ClawsDragon, inserting it into the Build Driver, and turning the crank.

Finishers
While transformed, Build initiates the Boltech Finish finishing move by turning the crank.