The Makita 18V LXT Lithium-Ion Brushless 2-piece Combo kit (model XT279S) gives you two efficient Brushless tools for drilling, driving, and fastening. The kit also includes the Category fastest-charging 3.0Ah batteries and the expansive breadth-of-line of the Makita 18V LXT system, so your batteries will power the expanding range of Makita tools and accessories. The XT279S includes a variable speed ½” driver-drill with two speed settings and an efficient Brushless motor that delivers a full 530 ft. Lbs. Of max torque. The kit also includes a variable speed impact driver with a full 1, 500 inch-pounds of max torque. The efficient 18V LXT 3.0Ah batteries each reach a full charge in only 30 minutes, so they spend more time working and less time sitting on the charger. It’s part of Makita’s expanding 18V Lithium-Ion system, the worlds largest cordless tool system powered by 18V Lithium-Ion slide-style batteries. Makita 18V 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.