Our Silver Star "Star Drive" stainless steel wood screws are manufactured from the finest quality stainless steel alloys. For use with chemically treated materials and in wood and plywood applications which are exposed to the weather, high moisture and other caustic conditions which make corrosion resistance of primary importance. When corrosion of fasteners could affect structural performance, protection against the effects of saltwater, or just to prevent unsightly staining, our Silver Star "Star Drive" stainless steel wood screws provide the best protection available. Excellent for hardwood, cedar, redwood and other tannic acid woods. Includes Drive Bit!