The Magnetic heavy-duty door stoppers come in a 4-pack of magnetic door stops made of steel and zinc alloy in a sleek matte black finish to match your door hardware. These durable doorstops are designed to protect your walls and doors from damage and eliminate the slamming door sound. These door stoppers are 4 inches long when attached to the magnet, suitable for most doors. Simply attach the door stop to the wall or floor with included screws. Remove the risk of punctured walls and splintered wood caused by slamming doors.