• Trapezoidal sheet screws 6.3 x 25 mm made of galvanized steel with sealing washers. • Weather resistance thanks to galvanized steel and sealing washer. • Recommended installation with a socket wrench to avoid damage and corrosion. • Ideal for trapezoidal sheets and sandwich panels on roofs. • Self-drilling points that do not require pre-drilling. • Drilling screws with rubber gaskets to prevent moisture and air. • Suitable size for fixing overlapping sheets and waterproofing. • Not suitable for aluminum sheets. • Measurement difference of 1-2 cm possible due to manual measurement. • High-quality materials: galvanized steel, corrosion-resistant. • Rubber gasket that prevents water entry and ensures connection. • Easy installation with hex screws and special drilling points. • Multiple uses: fixing sheets, gutters, sheet roofs, and metal structures.