Impact drivers are the fastest growing power tool category because they make work so much easier. ONE+ delivers more innovation, features and power to impact drivers than ever. The variable speed trigger assists in screw start up, allowing the unique impact mechanism to drive the longest deck screws or largest lag screws with ease by delivering more than 1600 in lbs of torque. It is over 33% faster and more powerful than the previous model and incorporates the Tri-Beam LED lights to eliminate shadows on bits and fasteners in the darkest work areas. When it is time get things done, just take the bit from the convenient on-board storage and place it in the Auto-load chuck. Nothing could be easier for fast, one handed bit changes. Use the EXCLUSIVE MagTray magnetic holder to keep screws and bits in easy reach. Add to that the new and improved GripZone overmold for optimum grip and user comfort to equal a pro featured tool with performance to match. Like all ONE+ items, this impact driver works with any 18V ONE+ battery. Upgrade to lithium-ion batteries for lighter weight and more performance.