The Makita 18-Volt LXT Lithium-Ion Cordless Impact Driver (model XDT11Z, tool only, battery sold separately) delivers power and speed in a compact size for a full range of driving and fastening tasks. It's part of Makita's expanding 18-Volt Lithium-Ion series, the world's largest cordless tool line-up powered by an 18-Volt Lithium-Ion slide-style battery. Makita 18-Volt Lithium-Ion batteries have the fastest charge times in their categories, so they spend more time working and less time sitting on the charger. For improved tool performance and extended battery life, Makita created Star Protection Computer Controls. Star Protection is communication technology that allows the Star Protection-equipped tool and battery to exchange data in real time and monitor conditions during use to protect against overloading, over-discharging and overheating. For increased versatility, the tool can also be powered by Makita 18-Volt LXT and Compact Lithium-Ion batteries with the star symbol on the battery indicating Star Protection inside. The XDT11Z features a Makita built 4-pole motor with variable speed (0-2,900 RPM and 0-3,500 IPM) that delivers 1,460 in./lbs. of MAX Torque. At only 5-3/8 in. L and 2.8 lbs. (with battery, sold separately), it has a compact and ergonomic design with less weight for reduced operator fatigue and a rubberized soft grip for increased comfort on the job. Variable speed (0-2,900 RPM and 0-3,500 IPM) and 1,460 in./lbs. of torque for a wide range of fastening applications 4-pole motor with innovative 4-brush design delivers increased RPM without decreasing torque All metal gear housing for maximum job site durability Compact and ergonomic design at only 5-3/8 in.