{Self-Drilling Metal-to-Metal Screws} - No pre-drilling needed. - Easily drills through 16-gauge purlins. {Multiple Sizes} - 250 Count Bags. - 1", 1.5", 2", & 3" lengths. - 5/16" Cupped Head - Self-sealing UV Resistant EPDM Washer. {Multiple Colors} - 17 different color options to fit your exact project. - Perfect for Metal Buildings with steel purlins. {Easy to Install} - Self-drilling tip makes for simple installation. - All orders include a free magnetic Hex bit Driver! {High Quality} - Powder coated head ensures the paint lasts for years to come. - Duraseal Plus Enhanced corrosion resistant coating over zinc body to ensure a long lasting hold with no rusting. EAGLE 1 is your “One Stop Sheet Metal Shop” on Amazon. We specialize in Metal Roofing Screws, Sheet Metal Flashing Rolls, Copper, Stainless Steel, Aluminum Diamond Plate, and much more. We are located in Decatur, Alabama and look forward to serving you. Feel free to reach out to us and put our 25 years of experience to work for you.