An invisible hinge is a type of hinge that is designed to be as minimally visible as possible when in use. This type of hinge is often used in the furniture industry to open and close doors and cabinets without the hinges being visible. Invisible hinges can also be used on other types of products, such as windows and doors. They are often made of steel or aluminum and are designed to be strong and durable. Invisible hinges are valued for their aesthetic benefits and for the fact that they are not visible when in use, which can help to improve the appearance of a product.