? Packing and size? Our packing includes 5 PCS Birds Cage Cup. The size is 12 * 7 * 3.8cm, and the length of the hooks is 1cm. You can easily take it out and wash it with water, and won't trap bad odors or germs like another food bowl, keep pets safer to use. ? ?High Quality? This bird feeder is made of high quality plastic material, which is environmentally friendly, odorless, wear-resistant and durable. The edges of the pet bowl are smooth and burr-free. Very safe for your birds, poultry, rabbits. ? Easy to install? This bird feeder with rear hooks, can be simply hung on a bird cage. 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, prevent your bird from accidentally spilling the food or water bowl, keep your cage clean and hygienic and save food. ? Wide application? Our feeding bowl can also be used to feed pigeons, doves, parrots, cockatiels, conures, canaries, small animals, finches, doves, parakeets. It is not only a feeding and water bowl, but can also serve as a perch platform.