Groundbreaking toys ... that's what we bring you. The Silly Saucer - Wackey shapes keeps the marbles inside in constant motion creating sights and sounds that will stimulate your pet for hours on end. Hangs from roof of cage. Pets need stimulation, especially when you're away (work,school etc.) Silly Saucer will break-up the monontany during the times of your absence. Size 8 3/8 inch x 4 3/8 inch x 1 3/4 inch. Made from tough FDA approved polymer.