Powerful magnetic catch makes sure a wind gust won't slam the door in your face when you're bringing in the groceries! Mount the magnetic post on the floor or wall, and the smaller, spring-loaded, magnetic catch near the door bottom. Also protects wall from door knob. Gently pull door for easy release. Durable steel construction with strong magnets. Utilizing strong magnetic power, this clever stop holds doors securely open, protecting walls from bumps and knocks. A gentle tug releases door for easy closure. It is sell well in domestic and foreign markets.