1, High quality zinc alloy construction magnetic door stopper. Brushed stainless steel finish, corrosion and rust resistant. 2, Powerful magnet on the door stop holds the door open. Disengaged by gently pulling the door away from the door stop and avoid the door being suddenly closed. 3, The base size is 5MM, thin enough and prevents from kicking and tripping. 4, Self-adhesive: Provides extra strength and durability, just peel and stick. No drilling required. You can also install it with screws. 5, Easy to install: Please note that the installation distance of the magnet piece from the ground should be between 5 and 12 mm, otherwise it cannot be adsorbed. Size 1 Piece Color Silver Battery(s) Included No Battery(s) Required No