Ware Manufacturing's Chew Proof Hay Feeder is the perfect solution for feeding Rabbits, Guinea Pigs and Other Small Pets. This feeder features a all metal design that provides you with the durability to last while being chew proof. Side Hooks make this feeder easy to install on any cage, just simply attach the hooks to the cage wire and can be attached to the inside or outside of the cage. Ware Manufacturing's Chew Proof Hay Feeder also features a snap lock lid that reduces wasted food and helps keep the cage mess free. Measures 8-3/4-inch width by 2-inch depth by 9-1/2-inch height.