Fastening deck boards and trim can result in visible screws which can distract from the beauty of your outdoor project. The Deck-Drive™ DCU screw plug solution is a complete Hidden Deck-Fastening System™ designed for use with our premium DCU Composite screws, and consists of DCU Composite screws, DCU screw plugs and the Auto-Set Driver bit (each sold separately). The Deck-Drive DCU screw plug solution is perfect for hand-drive applications. The Auto-Set Driver bit is compatible with both impact drivers and drills, and drives the DCU screw to the proper depth for installing DCU screw plugs.