The 4M Kidz Labs TORNADO Maker science Kit shows children the science behind one of nature's most powerful phenomena. Perfect for any young scientist aged 8 and up, this kit includes components for a tabletop TORNADO Maker that children can build with adult supervision. Once complete, simply attach a clean soda bottle filled with water to amaze family and friends with a terrific tabletop TORNADO display. Some common household items and two AA batteries are required. Details: Multicolor 8.5" x 9.5" x 3.25" Some common household items required 2 AA batteries are required For ages 8 and up Contents: Tornado Maker components Easy-to-follow instructions Fun fact sheet to guide kids and parents through the experiment