1, Magnetic door stopper of high quality zinc alloy construction. Finished in brushed stainless steel, resistant to corrosion and rust. 2, Strong magnet on the door stopper holds the door open. Disengaged by gently pulling the door away from the door stopper and avoid the door being suddenly closed. 3, Base size is 5MM, thin enough and prevent kicking and tripping. 4, Self-adhesive: 3M adhesive provides extra strength and longevity, just peel and stick. No drilling required. You can also install it with screws. 5, Easy to install: Come with 3M self-adhesive and screws. Please note that the installation distance of the magnet piece from the ground should be 5-12mm, otherwise it cannot be adsorbed. Thick and Safe The height of the base is about 5mm, thin enough to prevent kicking and tripping. Door gap distance cannot exceed 12MM Please note that the installation distance of the magnetic part from the ground should be 5-12mm, otherwise it cannot be adsorbed.