Bomb hinges are a type of hinge used to attach doors or other moving objects to a fixed base. They are named after their shape, which resembles a bomb, with two long, round parts attached to a central axis. Bomb hinges are usually made of metal, such as steel, stainless steel, or aluminum, and can be coated with a protective layer to prevent rusting. They are often used for doors or other objects that are heavy or heavily used, because they are strong and durable and allow smooth movement of the object. Bomb hinges are also easy to install and replace and are available in various sizes and styles to meet the needs of different applications.