Ware Manufacturing's All Metal Powder Coated Chew Proof Hay Ball Feeder provides fun and function all rolled into one unique design. The Ball shaped design promotes play and easily attaches to any cage. Just stuff with hay and attach the Hay Ball feeder to the cage and watch your small pets jump with joy as they eat and play. The Hay Ball Design prevents wasted food and messy spills while keeping the cage clean. Available in a variety of colors. Measures 4-inch width by 4-inch depth by 8-1/2-inch height