With the Bank Turn Kit, build awesome angled turns into your tracks. Race around these turns at faster speeds and pull some serious G-forces; Bank turn kit includes: 4 bank turn pieces. Drive your dream battle track by adding new curves, intersections, and jumps. Get more supercars for extra strategy and action, or get monstrous supertrucks for a whole new challenge. Anki overdrive requires a starter kit and a compatible mobile device (each sold separately). Set up is easy, simply open the starter kit and build your battle track. The anki overdrive app automatically handles everything else. Na. Na. Size H28.9, W8.9, D7.8cm. For ages 8 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.