High-quality material: The bird feeder is made of iron wire, which is durable and not easy to deform. There is no need to worry about being corroded if it is placed outdoors for a long time. Package Contents: You will receive 4 bird feeders in metal and 4 S-shaped hooks with chains. The size of the bird feeder is 9.5*7cm, and the length of the chain is 40cm. Easy to use: open the lid, put the fat balls in, then close the lid to secure the fat balls inside the bird feeder. You can use the hooks to hang the bird feeder on windows, balconies, trees, gardens and more. Wide Application: The bird feeder is perfect for helping wild birds, finches, etc to eat outside. ron cages can also be used to hold candies, chocolates, cookies, etc. to give to guests at parties.