Makita XT257T 18V LXT Lithium-Ion Brushless Cordless Combo Kit, 2-Piece (Discontinued by Manufacturer) Kit Includes 1/2" BL Hammer Driver-Drill, BL Impact Driver and 2 ea. 18V LXT 5.0 Ah Batteries Efficient BL Brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge The BL Brushless Motor eliminates carbon brushes, enabling the BL Motor to run cooler and more efficiently for longer life The electronically-controlled BL Brushless Motor efficiently uses energy to match torque and RPM to the changing demands of the application Variable 2-speed 1/2" Hammer Driver-Drill (0-550 & 0-2,100 RPM) with BL Motor delivers 1,090 in.lbs. of Max Torque