Make your home safer and more secure with the StrikePlate Lock. Regular door chains can be broken with a few kicks, but StrikePlate holds fast. This item, designed by a long time police officer, features long screws, placement nearer to your door lock, hooks onto door handles/knobs. Make any room a safe room with the easy to install StrikePlate Lock. Works on all door types (wood or metal). Find peace of mind knowing your homes doors are secure.