• Made of galvanized steel for high resistance to corrosion, mechanical wear, and weathering. • Includes an elastic rubber sealing washer that prevents water and air from entering through the screw hole. • Hexagonal head that guarantees secure fastening and avoids common breakages found in Phillips heads. • Special self-drilling tip that allows for direct installation without the need for pre-drilling holes. • Specially designed for fastening trapezoidal sheets, sandwich panels, gutters, and metal roofs. • Dimensions of 4.8 x 16 mm ideal for joining overlapping sheets and waterproofing. • UV-resistant material ensures a durable finish in outdoor projects. • The package contains 120 units in metallic silver color.