Learn about the power, drive and force behind gears in this Slinky All About Gears Kit. This set includes a collection of different-sized gears that are motorized and magnetized to create a world of spinning fun! Slinky All About Gears Kit Features: Magnetized gears — work on any metal surface like a refrigerator Decorative decals Metal board to place gears on 20-page fun and facts manual Requires 2 AA batteries (not included) Ages 8 and up Made in USA