EAGLE 1 Self-Drilling Metal Building Screws are available in 1”, 1.5”, 2”, & 3” lengths. Easily drills though the roof panel and 16-gauge steel purlins. 250 per screws per bag. Free 5/16” hex bit driver included to help you get the job done. Exceptional corrosion resistance paint system featuring 2.5 mil of computer-controlled powder coat is applied over zinc plating and chromate that will keep your replacement screws looking new for years. EPDM rubber washer seals to the roof panel to prevent leaks. Here at EAGLE 1, we are sheet metal people. If you need assistance send us a message. We are a full-service sheet metal supply company and will do everything possible to get you the correct metal roofing screws for your project. 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.