Screw Size : 6.7 x 65 mm / 6.7 x 85 mm / 6.7 x 100 mm / 6.7 x 150 mm / 6.7 x 200 mm Product Features Hex Flange Pilot Hole Not Normally Required Suitable for Indoor & Outdoor Use Straight Shank for Smooth Penetration Heavy Duty Coating Shank Flutes Help Remove Debris 1000 Hours Salt-Spray Tested