Fridge robot is a moving fridge magnet, defying gravity with each step. Build the robot and watch it walk up and down your fridge. Includes robot parts, magnets and instructions. Requires two AAA batteries (not included). Recommended for age 8 years and up.Construction kit for building a robot that walks up and down any magnetic surface.A powerful S.T.E.A.M. learning experience – Science, Technology, Engineering, Art, Math.Includes 19 mechanical parts to put together and detailed instructions.Requires small Philips head screwdriver and two AAA batteries (not included)Recommended for ages 8 and up.