Strong magnetic attraction: The magnetic door stop prevents your door from slamming through the integrated soft card door technology, and has the soft card door function, which can gently and silently stop any door. Door Closers Installation method: 3M tape can be used, no need to drill, or permanent installation with screws, more durable, please note that 3M plastic door stop is suitable for smooth, flat and dry surfaces, not suitable for dry walls and uneven surfaces, so It is very durable and highly recommended for screw installation. Material: The door stop is made of zinc alloy,durable. Unlike other doorstops, our magnetic doorstops can be rotated at the joints to enhance suction and effectively prevent wind. Each door stopper comes with you need, making installation a breeze., Manufacturer: KNBHGUJMD