150 Pack, #12-14 x 2", Teks Hex Washer Head Drill Point Screws Provide Secure, Weather Sealing Metal-To-Metal Fastening With Strong Holding Power Without The Need To Pre-Drill, Engineered Drill-Point & Flute Remove Material Efficiently & Properly Size The Hole For Threads, Ideal For Fastening Thicker Gauge 20-12-Gauge Exterior Metal To Metal Where A Sealing Washer Is Needed.