Decadriver

The Transformation Belt Decadriver (変身ベルト ディケイドライバー, Henshin Beruto Dikeidoraibā) is a belt that gives Tsukasa Kadoya the ability to become Kamen Rider Decade, based around the Rider Cards. It was created alongside the Ride Booker, as well as Diend's Diendriver, by scientists of Dai-Shocker, which included Joji Yuki.