Discover the secrets of aerodynamics with Mechanics Lab - Aeroplanes and Helicopters; A scientific kit for discovering and experimenting with the mechanics of flight. With 10 models and 200 components to assemble, including: rods for assembling the nacelles, panels, propellers, cogs, pulleys and universal joints. The illustrated manual will show your child how to assemble the various models. . . For endless hours of fun; Science museum approved; Size H39.6, W27.8, D6cm. 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.