SAVE TIME; No need to put a stopper every time in a cluttered environment SPRING-OPERATED; Spring to cushion the collision when the magnet sticks to the door DIMENSIONS; L 3.7cm x W 5.3cm x H 3.1cm MAGNET ATTACHES; The magnet attaches to the floor and the magnetic piece attaches to the door MATERIAL; Metal Floor Mounted Magnetic Door Stop Floor Mounted Magnetic Brushed Metal Door Stop Hold the door open without having to stopper, which could constitute a tripping hazard. Secure the magnet to the floor using the supplied screws and anchors, then line up the magnetic piece on the door and use the supplied screw to secure it in place. You can now open the door and it will stick to the magnet and stay there until you close it. Features SAVE TIME; No need to put a stopper every time in a cluttered environment SPRING-OPERATED; Spring to cushion the collision when the magnet sticks to the door DIMENSIONS; L 3.7cm x W 5.3cm x H 3.1cm MAGNET ATTACHES; The magnet attaches to the floor and the magnetic piece attaches to the door MATERIAL; Floor Mounted Magnetic Door Metal Stopper Contains 1 x Floor Mounted Magnet 1 x Magnetic Piece 3 x Screws 2 x Anchors