Hillman Star Drive Outdoor Wood Screws are ideal for decks, stairs, playsets and many other outdoor projects. Featuring Star Drive technology which virtually eliminates camout for a smooth, effortless drive every time. Chances for splitting wood are greatly reduced by the patented cross-cut threads and the wood biting cut point. Provides superior rust and corrosion protection.2.5 x #10Finish: Stainless SteelStar driveSharp pointSerrated threads for reduced drive torque6 point star drive system eliminates cam out4 sharp countersinking bladesCoarse thread for optimal holding powerKnurled section prevents splitting.1 lb package.