Steel Butt Plugs !! Metal Butt Plugs, jewel butt plugs. Many people enjoy the feeling of cold, hard, smooth metal over soft and warm rubber plugs, Passionzone's metal and steel butt plugs provide the answer. These anal plugs are made of steel for an increased durability, and ease of use. An added benefit is that they are also easier to clean properly than soft plugs, and may allow for a smoother experience.