Power Pro Premium 305 stainless steel exterior wood screws offer superior corrosion resistance and are perfect for decking and many other outdoor projects. These screws feature a no-strip star drive, countersinking blades, no split twist shank and no pre-drill, Borefast thread. Power Pro premium exterior wood screws include a limited lifetime guarantee against rust and corrosion. The 305 stainless steel coating is guaranteed within 5 miles of coastal water against corrosion in cedar, redwood and treated lumber for the life of the project.