Powered by an efficient brushless motor, the Senco 18V Lithium-Ion Brushless Cordless 3" Auto-Feed Screwdriver Kit 3.0 Ah (10C0001N) features a variable speed selector for heavy steel and a quick release feed system with patented corner fit technology. The DS222-18V also features feed on return - the next screw is aligned with the bit for better line-of-sight and easier, more accurate screw placement. Perfect for flooring, decking, docks and crating.