The Hilti line of Nylon Flat Head Phillips Impact Anchors with Screw let you get your fastening project accomplished quickly and efficiently. The quick impact installation is performed using a hammer, and the hammer-driven screw can also be driven or unscrewed with a screwdriver. The Impact Anchor's expanding head opens in the hollow base material, providing a reliable keying effect. Applications most commonly completed with these Hilti Anchors are fastening trim strips, battens, and components for electrical and plumbing installations; and anchoring concrete, brick ties, and masonry. Get the impact Anchors that professionals use: the Hilti Nylon Flat Head Phillips Impact Anchors with Screws.