Fullsexy 2 Pack Premium Door Stopper- Heavy Duty Wedge Rubber Stopper, Anti-Slip Non-Scratching for Home Office School (W17) Heavy duty: Compared to other cheap rubber door stops, our size is twice that of them. Those door stops are only 25g, and our heavy door stop has 133g. When it comes to strong wind, those cheap door stop is weak and our heavy door stop can withstand stronger winds Thickened metal plate: The door stop is wedge-shaped and is suitable for stopping the door. The tilt of the stop is strong, increasing the friction between the door and the plug, making it non-slip. Sheet metal is embedded in the door stopper. With sheet metal, the door stop can withstand more force. Wide range of uses - whether it's tiles, concrete or wooden floors, these door wedges will prevent your door from moving. They are best suited for use in institutions and offices, although they are also perfect for home use. Provides a powerful, reliable wind and high pressure closure mechanism. Support cross ventilation doors or prevent children from being injured at home. Our sills feature a non-slip design that prevents the door from closing when the breeze tries to close them, which prevents accidental injuries. There is no need to worry that these will leave any unwanted marks on your floor because it is made of silicone, soft and flexible.