Kaytee Rollin' The Hay Holder. Rollin' the hay is nutrition and fun rolled into one. This spectacular spinning hay holder can be used three ways: hang from any wire cage, set on the floor with the included stand, or for a ball of fun, place anywhere in your pet's environment. Pets love to play while eating healthy hay. Rollin' the hay is spectacular spinning fun for rowdy rabbits, gleeful guinea pigs, and cheerful chinchillas. Can hang from wire cage, be stationary, or used as ball Available in assorted colors The cleanest way for your critter to nibble on healthy treats and veggies 5.5" long, 5.5" wide, 7.25" high For rabbits, guinea pigs, chinchillas or other small animals.