[Package includes]: 1 piece hay rack, 18cm*14cm*9cm (size). [Material]: high quality plastic + galvanized sheet, hard and durable, wear-resistant corrosion, good protection ability. [Clean and organized]: Save space in the cage. Protect pet food from urine or feces and keep the inner cage clean. [Installation]: Easy adjustment and no need for additional tools. Simply attach the hay feeder to the cage by turning the white rear knob. [Suitable for]: Small animals such as chinchillas, rabbits, guinea pigs, etc.