100PCS 3/16" or 1/4" Concrete Screw Anchor Blue Flat Head Screws with Drill Bit for Anchoring Masonry Blocks or Bricks To MortarCONCRETE SCREWS WITH DRILL BIT: Each box includes 100 high-quality 3/16" x 1-1/4" flat head cement screws together with a 2 drill bit to your convenience.EFFORTLESS INSTALLATION: Featuring a special High-Low thread design, our masonry screws make certain swift and safe fastening on varied masonry materials, comparable to concrete, cement, blocks, and bricks.PREMIUM QUALITY: Crafted from top-notch 1022A carbon steel and handled at high temperatures, our self tapping concrete screws offer exceptional hardness and are available with a blue rust-resistant coating for nice corrosion resistance.CONVENIENT PACKAGING: These brick screws are thoughtfully packed in a fine PP box, protecting you organized and prepared for on-the-go needs.EXCEPTIONAL SUPPORT: We are fully dedicated on your satisfaction. If you have any questions on our product or want installation assistance, please don't hesitate to reach out to us via email. Your concerns are our peak priority.