Discover the mysterious workings of mechanical transmission with the Mechanics Lab- Agricultural Machinery model kit. Over 200 components and 10 models to assemble. With cogs and universal joints that really work, watch as these powerful agricultural machines come to life; The kit also comes with: a differential, tyres and wheels, cogs, universal joints, axles, rods, panels and a rich illustrated manual, with all the instructions for assembling the models. 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.