Build creepy, crawly, buggy-eyed creatures that MOVE with this 100-piece Oogly Googly Gears set! Who knows what may emerge – there are endless possibilities. Start with the motor, add some gears, a couple of claws, an eyeball or three, a bit of imagination and you’ve created a Monster! Can be used alone or with other Gears! Gears! Gears! sets. Requires 2 “AA” alkaline batteries (not included).