4M Tin Can Edge Detector Robot - DIY Science Construction Stem Toy For Kids and Teens

Build your own edge detecting robot using a recyclable soda can with the Tin Can Edge Detector from 4M. Watch it glide across the table without tipping over. You will need an empty soda can, a small crosshead screwdriver, and one AAA battery. The kit includes a base cover, base with wires, a lower can ring, an upper can ring, a gear top plate, a battery cover, 2 lower arms, 2 upper arms, 2 transparent covers, a motor with wires, 2 axles, 2 eye supports, 2 eyes, 2 sets of bolts and nuts, 2 gear wheels, 2 terminal caps, 5 small screws, and detailed instructions. Required but not included are a clean, empty soft drink can, a small Phillips head screwdriver, and one AAA battery. This item is recommended for ages 8 years and up.