INSTALL BY STICKERS: If use stickers to install,it is easy and no leaving any holes on the wall or door. We use super powerful adhesive stickers which is more powerful than the market product and no residual after remove,re-useable after wash. It only for smooth/flat/dry/ clean surfaces. Drywall/cement/painted/ textured wall is not allowed for adhesive installation. Which may cause the wall ripped or the door stopper falls off. INSTALL BY SCREWS: installed by screws is the most recommended way for robust and long lifetime using and it almost suit for all surfaces. SOLID & ROBUST & HEAVY DUTY: door stopper features in high-quality stainless steel material with a smooth and elegant surface,not only looks modern and elegant,but stable and robust in daily use. The matt painted finish magnetic doorstops surface is built to resist daily scratches,corrosion,and staining. POWERFUL MAGNETIC DOOR HOLDER: Our powerful magnet undergoes hundreds of physical tests. We chose the right magnet power that ensures the door will stay ly open and function seamlessly. The magnetic force is strong enough to keep the door open in strong winds. SUITABLE FOR VARIOUS DOOR TYPES: The magnetic door stopper can be placed on many surfaces: wood,metal,composite material,etc. The magnetic door stopper is functional,beautiful,and fits many décor styles.ctional,beautiful and fits many décor styles. DESIGN AND FINISH: The stopper has a smooth painted texture. It is made from premium stainless steel and precise machine cutting. Our product is sturdy,rust-proof,and has an elegant design. Prevent damage to your doors and walls.