The Makita 18V LXT LithiumIon Brushless cordless QuickShift mode 3speed impact driver (model XDT14T) is a bestinclass fastening solution for users who want more torque, longer runtime, and precision fastening features. The XDT14T delivers all of the above in a compact size with a superior powertoweight ratio. The XDT14T combines a full 1,550 in.Lbs. Of fastening torque with categoryleading precision features. Quickshift mode uses the Brushless motors electronic controls to find the best balance of speed and torque for each application for more efficient fastening. Another precision feature is tightening mode (tmode), which downshifts and reduces rotation and impact speed prior to driving the screw into place, and is engineered to minimize screw thread stripping, screw breakage and damage to work. These precision features, combined with 3speed power settings, give users more control for a wide range of fastening tasks from cabinet screws and deck screws to lag bolts, and much more. It is only 45/8 long and ideal for work in tight spaces. ItS part of Makitas expanding 18V LithiumIon system, the worlds largest cordless tool system powered by 18V LithiumIon slidestyle batteries. Makita 18V LithiumIon 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 Protectionequipped tool and battery to exchange data in real time and monitor conditions during use to protect against overloading, overdischarging and overheating. For increased versatility, the tool can also be powered by Makita 18V LXT and compact LithiumIon batteries with the Star symbol on the battery indicating Star protection inside.