Rubber grommets have a lot of important uses and purposes. In manufacturing or production/repair and other related industries, grommets are used to cover the rough and edges of a hole in a metal junction. This is designed to protect material as it is passed through. When a wire must go through a hole in metal, rubber grommet is to use. Features - Color: Black. - Material: Rubber. - Size: 9.50 x 5.80 x 0.50cm/ 3.73 x 2.28 x 0.20 inch. - Rubber material, strong flexibility, anti-aging, folding resistance, strong insulation protection function. - Rubber plugs are , insulated, flame-retardant, and protect wires or any other material from metal friction. - Rubber grommets are made of flexible and durable rubber material, they are of good electric resistance capability. - Rubber grommets are used to protect lines, wire and cable from chafing or grazing on rough surface. - For use in replacing worn or broken grommets in faucets. Package list: 4 x grommets