Description: Fun & Imaginative STEM Kits Educational toys: Foster your kids imagination and creativity with this building toys as they build a colorful ride that works. Great diy kit for kids ages 8 year old and up.Engineering For Kids: Learn real world application by building erector set using 3d puzzles , motor , for kids. Our science toys include all the tools and materials necessary to complete this mechanical structure.Easy To assemble Model kits for adults and Kids: Perfect stem projects for kids ages 8-12. Eco Friendly 3D Puzzles For Adults and Kids: Our fun brain toys are safe, stimulating fun. Perform rewarding science experiments with your family or friends.Great Gift For Boys And Girls: Our science kits for kids is the best gifts for kids, teens, men, women and grandpa and grandma. This perfect IQ builder is a great choice as Thanksgiving Day Gift,Birthday Gift,Christmas,Father's Day Gift, science fair and weekend family activities. Specification: Material: WoodenPowered By 2 AA Batteries! (Not Included) Size Chart: HxW:23x15cm/9.06x5.91inch Package Includes: 1 SetDIY Electronic Kit Wheel Assembly Model Note: 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!