1/2 x 3 50pcs Concrete Screws, Nickel Plated Concrete Screw Drill Bit Set for Anchoring Masonry, Brick or Concrete Block

Upgrade Combo Kit: FMhotu Concrete Screw Drill Kit contains Concrete Screws x 50, Alloy Drill x 1, Mounting Drill Barrel x 1 | High-Quality Screws: Concrete Anchor body is made of hardened carbon steel with nickel-plated surface, which is not easy to be discolored and oxidized, and has high hardness to improve the aesthetics. | Perfect Design: The anchor features a serrated hex washer head with anti-rotation serrations to prevent the anchor from backing out. | Versatile: Large diameter anchors can be used as concrete screws, brick anchors and masonry screws to provide heavy-duty structural anchoring for indoor and outdoor applications. | Installation Ation: Pre-drill holes using the alloy drill bit supplied, then install the anchor directly using the sleeve.