For all masonry materials. Specially hardened high-low thread actually cuts thread into masonry materials. A simple 2-step operation, drill then drive. Tappers may be removed and re-inserted in the same hole. Clamshell packaging.
State of the art thread design cuts into concrete. Tapper screws are designed for fastening applications in concrete, block, and brick. Use Tapper screws to attach electrical equipment, two by fours, downspout straps, hose reels, flag poles, hurricane shutters, and more. Tapper screws are perfect for indoor and outdoor use.