High Quality Zinc Alloy Metal Construction Magnetic Door Stop. Brushed Stainless Steel Finish. Heavy Anti-Corrosion and Rust Resistance. Strong Magnet On Doorstop Keeps Door Open. Triggered By Carefully Pulling The Door Away From The Door Stop and Avoid. That The Door Is Suddenly Closed. The Height of The Base Is 5Mm. Thin Enough and Prevent. Kicking and Tripping. Self-Adhesive: 3M Self-Adhesive Provide Extra Strength and Durability. Just Peel and Stick. No Drilling Required. You Can Also Install It With Screws. Easy To Install: Come With 3M Self-Adhesive and Screws. Please Note. That The Installation Distance of The Magnet Part From The Ground Should Be 5-12Mm, or It Cannot Be Adsorbed.