The Simpson Strong-Tie® Timber Drive™ Structural Screw Fastening System is a revolutionary tool for stand-up operation while driving large structural screws. It’s ideal for heavy-duty jobs that require repetitive fastening, such as decks, docks, boardwalks, piers and flooring. The ergonomic design of Timber Drive makes it a faster, easier way to work — with less fatigue. Timber Drive can be used with corded or cordless motors and works with structural screws in a wide variety of lengths, diameters, thread types and heads. It also has a precision-placement tip that locates connector holes when fastening metal straps to mass timber panels, and helps to ensure perpendicular fastener alignment. Timber Drive also features an adjustable countersink, so you can customize the depth setting for any job.