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clementoni mechanics lab roadster dragster stem kit 1.5mm Flere strukturer inklusive overdådige ogA truly complete 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