WeatherGuard protection is proven to be 3x more resistant to corrosion compared to competitors. Formulated to withstand harsh weather and the corrosive effects of pressure-treated lumber, WeatherGuard's superior performance is confirmed through extensive testing. The National Hardware Zinc-Plated Silver Steel 10 in. L Screw Hook, rated for 150 lb and available in a 1-pack, demonstrates this advanced corrosion resistance.