One-Step installation: Anchor size = Hole sizeFast & easy to install into concrete, block, brick or stoneCorrosion resistant bodyCan be installed through fixture. Ideal for awnings, electrical boxes, roofing, and roof/window flashing.Tamper proof, ideal for security applicationsThe Drive Nail Anchor is easy to install and ideal for medium-duty and tamper-proof applications in any type of masonry. It is a two-piece nail-in anchor comprised of a corrosion resistant die-cast zinc alloy anchor body. Available sizes range from 3/16" x 7/8" to 1/4" x 3".