General description Made of high-quality stainless steel, this door stopper is rustproof and durable, featuring a brushed surface that resists scratches. It includes a thick black rubber head and a 3M self-adhesive sponge to cushion the force, ensuring silent operation while preventing damage to doors, walls, and furniture. This versatile door stopper is suitable for various types of doors, including kitchen and bathroom doors, and can be used on smooth surfaces such as glass, wood, wallpaper, tiles, and metal. Technical specifications Dimensions: 5.5 x 9.5 cm Base diameter: 55 mm Total length: 95 mm Contents: 4 metal door stops, 12 screws, 12 expansion bolts Installation Two installation methods: 3M self-adhesive or drilling For 3M self-adhesive installation: Step 1: Clean the wall to remove dust and oil stains Step 2: Remove the adhesive protective film Step 3: Measure the installation location and press firmly for 5-7 seconds Step 4: Wait until the adhesive is fully set before