A truly scientific kit to discover the secrets of these powerful two and four-wheeled vehicles. 2 dynamic models can be built: a dragster and a roadster, and transmission mechanisms can also be checked. Contains more than 130 interchangeable components including: gearbox, gears, rims, tyres, elastics, bars, brushes, sheaves and pins. In addition to the assembly instructions, a sheet with lots of scientific information on aerodynamics and the mechanics of internal combustion engines. Science Museum approved; Size H27.6, W18.8, D4.5cm. For ages 8 years and over. Manufacturers 2 year guarantee. WARNING(S): Not suitable for children under 3 years old. Only for domestic use. To be used under the direct supervision of an adult.