A toggle clasp is a type of jewelry fastener commonly used in bracelets and necklaces. It consists of two main parts: a bar and a loop. The bar is inserted through the loop to secure the jewelry, creating a simple yet effective closure. Toggle clasps are popular for their ease of use and stylish appearance. They come in various materials, such as metal and plastic, and can be found in different designs to match various styles of jewelry. This makes them a versatile choice for both casual and formal pieces.