Ensure that your next project is performed efficiently and built to last with these Prime Source Star T-25 Bugle Head Screws. The countersinking bugle head prevents screw heads from showing, leaving a smooth finish. These 2-1/2" Grip-Rite screws are designed for exterior applications including decks, siding and gazebos. They include a protective proprietary polymer coating and have a lifetime guarantee against rust and corrosion.