Hilti 1/4 in. x 4-1/2 in. Kwik Bolt TZ2-Carbon Steel Zinc Plated Concrete Wedge Anchor (100-pack) 2210176 - The Home Depot

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