Each kit includes everything your child will need to allow them to build fun models that move and work. The pieces are interchangeable with the entire Techno Gears series. This product aligns with the Science, Technology, Engineering and Math standards. Action packed marble maze with a marble launcher. 100 pieces to build and create your own marble and gear run. Once completed, the spring loaded shooter launches the marble to the top of the build where the track and fun begins. The only limit to what you build is your own imagination. Hours of endless fun. Size H40.96, W41.28, D64.14cm. For ages 6 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use. To be used under the direct supervision of an adult.