Makita XT252M LXT Lithium Ion Brushless Cordless Combo Kit, 2-Piece (Discontinued by Manufacturer) Variable 2-speed 1/2" Hammer Driver-Drill (0-550 & 0-2,100 RPM) with BL Motor delivers 1090 in.lbs. of Max Torque; weighs only 5.9 lbs. with battery 3-speed impact driver (0-1,300/0-2,000/0-2,600 RPM & (0-1,300/0-2,800/0-3,400 IPM) delivers 1,460 in.lbs. of Max Torque and weighs only 3.3 lbs. The electronically-controlled BL Brushless Motor efficiently uses energy to match torque and RPM to the changing demands of the application BL Brushless Motor eliminates carbon brushes, enabling the BL Motor to run cooler and more efficiently for longer life Efficient BL Brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge Star Protection Computer Controls to protect against overloading, over-discharging and over-heating Includes: XPH07Z, XDT01Z, (2) 18V LXT Lithium-Ion batteries, rapid charger, tool case