Features: This not drill alloy mechanical door stopper features a attach on structure for tool easy , 3 second installation, solving the problem of wall damage from traditional methods and providing a easy setup experience. Built with erosion resistant alloy and a push press automatic locking design, it ensures stable door holding without magnetic aging, offering black, silver, and gray finishes to complement various modern decor styles. Ideal for renters and families concerned about wall damage, this product caters to users seeking not intrusive and easy to install door solution for their homes. Perfect for high frequency use in bedrooms and office doors, this door stopper delivers smooth operate and durability, enhancing convenience in everyday settings. With its very thin 2cm profile and double installation option including adhesive pads and screws, it provides a discreet, secure hold for various door types like wood or composite, improving aesthetics in minimalist spaces. Specifications: Component : alloy Process: electroplating Diameter: about 6.3cm/2.48inch Package Includes: 1xMechanical Floor Suction note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.