Smart-Bit® Deck screw depth setter is designed to make fastening decks, drywall and general screw setting easier and faster, with clean and uniform results: perfectly set screws every time. The tool is adjustable so that it can be used with many different screw types and sizes and features an Auto-Stop™ mechanism that sets the screw at the target depth without stripping the screw recess. A free-spinning stop collar with rubber O-ring protects the work surface from damage or marking.