Power Pro premium exterior trim screws are ideal for composite decking, wood decking and exterior trim projects. The fastener coating is guaranteed against corrosion in cedar, redwood, and treated wood for the life of the project. FINISH YOUR DREAM PROJECT: Ideal for composite decking, wood decking, and exterior wood trimBEST-IN-CLASS CORROSION PROTECTION: High marine grade 305 Stainless Steel Coating offers superior rust and corrosion protectionQUICK INSTALLATION: Drives 20 percent faster without the need to pre-drillNO-SPLIT TWIST SHANK: Eliminates splitting and cracking of material upon installationCOUNTERSINKING BLADES: Enable a more secure lock into the wood surfaceUNIQUE STAR DRIVE TECHNOLOGY: Virtually eliminates camout for a smooth effortless drive every timeLUMBER SAFE: These screws are recommended for use with treated lumberBONUS T20 BIT INCLUDED: A T20 star bit is included in package to take the guesswork out of installation