Package and Size:Our package includes 5 PCS Birds Cage Cup. Size is1273.8cm,and hooks length 1cm. You can easily remove it and wash it with water, and does not hold bad odors or germs like a other food bowl, keep pets safer to use. High Quality:This bird feeder is made of high quality plastic material, environmentally friendly,odorless, wear-resisting,durable. The edges of the pet bowl are smooth without burrs. Very safe for your birds, poultry,rabbit. Easy to Install:This bird feeder with back hooks design, can be simply hung on a cage for bird use, Ensure the bird feeder can fixed in the cage firmly, prevents your bird from accidentally tipping food/water bowl. Also you can also place it directly at the bottom of the cage if you want. Function:The hanging food bowl can be used to hold food or water, which is convenient for pets to eat, prevents your bird from accidentally tipping food or water bowl, keep your cage clean and hygienic, and save food. Wide Application:Our feeder bowl can also be used to feed pigeons,dove, parrots, cockatiel, conures, canary, small animals, finches ,doves, budgies. It is not only a food and water feeder bowl but also can be as a stand perch platform.