Grommets are small, ring-shaped devices made from materials like rubber, plastic, or metal. They are used to reinforce holes in various materials, such as fabric, leather, or metal, preventing tearing and providing a smooth edge. Grommets are commonly found in items like tarps, curtains, and banners, where they allow for easy attachment or threading of ropes and cords. To install a grommet, a hole is punched into the material, and the grommet is placed in the hole. A tool is then used to secure it in place. Grommets are essential in many applications, including sailing and construction, where durability and strength are important.