Stimulate science and engineering thinking - This STEM toy promotes kids skills in science and engineering during play time to develop creativity and practical ability. Safe Toy for Kids - All pieces of the robot building toy are made with high quality non-toxic ABS materials and certified to meet European and American Toy safety standards. Manufacturered by Onnetila. DIY Instruction Booklet: Clear and complete guide booklet for kids to follow let your kids to explorer their own world independently. SATISFACTION GUARANTEED: We're sure that the child will love this science project for kids 7-12 but if you are not satisfied we'll refund you no questions asked. Science Kits for Kids - The STEM toy kit allow kids to build their own robot vehicle by themselves. You will get a 4WD car driven by real electric motors with gearbox and chain.