The Hangman Silver Double Headed Hanger is built to withstand outdoor conditions. It can be installed with a Phillips screwdriver into wood, lath and plaster, or drywall, and will bore into concrete or brick with pilot hole. The 1/4-inch exposed collar is ideal for keyholes, sawtooths, and wire, and works with D-rings. It can hold up to 30 pounds in drywall and 100 pounds when secured to A stud.