TEKS ROOFING SCREWS PROVIDE SECURE METAL-TO-WOOD FASTENING WITH STRONG HOLDING POWER WITHOUT THE NEED TO PRE-DRILL. SHARP SELF-PIERCING POINT IS IDEAL FOR FASTENING CORRUGATED ROOFING PANELS TO WOOD STRUCTURES. SELF-SEALING NEOPRENE WASHER PROVIDES A WATERPROOF SEAL AND A PREMIUM FINISH PROVIDES EXCEPTIONAL CORROSION RESISTANCE IN HARSH OUTDOOR ENVIRONMENTS. INSTALLS WITH A STANDARD SCREWGUN AND A 1/4 IN. HEX DRIVE BIT.