The Makita 18V LXT Lithium-Ion Brushless 3-piece Combo kit (model XT333X1) gives you three efficient Brushless tools for drilling, driving, fastening, and cutting. You also get one each of the categorys fastest-charging 18V 2.0 Ah and 4.0 Ah batteries and the expansive breadth-of-line of the Makita 18V LXT battery platform, so your batteries will power the expanding range of Makita tools and accessories. The XT333X1 includes a variable speed 1/2 In. Hammer Driver-Drill with two speed settings (0-500 & 0-2, 000 RPM) with a full 530 in. lbs. of max torque. The variable speed impact driver has a full 1,500 inch-pounds of max torque for efficient fastening. The 6-1/2 In. circular saw delivers 5,000 RPM and is equipped with Makita's Automatic Speed Change technology to adjust speed and torque during operation for optimum performance. Its 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.