Buckles are a type of fastener that is used to hold two things together. They are often made of metal, but can also be made of other materials such as plastic or wood. Buckles consist of a frame with a hinged clamp that can be opened and closed. The frame is attached to one piece of material, and the clamp is attached to the other piece of material. When the clamp is closed, it secures the two pieces of material together. Buckles are often used on belts, bags, shoes, and other items that need to be held closed or secured in place. They can be decorative or functional, depending on their purpose.