ScrewTight presented These jammer door stopper with a unique hollow design provides optimum friction to keep the door from closing on their own, confrontate strong winds, prevent lock, protect your children, babies from slamming doors. And pets will not be unable to go home because the door suddenly closes. These Door stopper Works well on floors like hardwood, carpet, concrete, tile, linoleum, stone, asphalt and ceramic providing superior clench Stop the doors from slamming slipping and sliding in a flat, Works on most tiles, hardwood floors, textured carpets, concrete and vinyl.