Proselect Stainless Steel Pet Cage Coop Cup, 16-ounce (Pack of 2) This coop cup securely bolts to any wire cage to hold water or food Removes easily with a twist of the wingnut Easy to clean and extremely durable Made of 14/4 stainless steel (14 percent chrome/4 percent nickel) Pack of 2, 16-ounce coop cups