Simpson says its Dexxter screws ease installation and enhance the appearance of composite decking. Features include a Type-17 point that easily pierces composite substrate, threads that carry away excess material, and a trim head designed to reduce the mushroom effect. Five head colors match a variety of decking choices. The screws come loose or in collated strips for use with the company’s Quik Drive auto-feed screw guns. Prices for a 350-count box start at $80. Simpson Strong-Tie Co., 800/999-5099,