The efficient Makita BL Brushless motor is electronically controlled to optimize the battery energy us for up to 50-Percent longer run time per charge. The brushless motor eliminates carbon brushes, enabling the motor to run cooler and more efficiently for longer life. The electronically controlled motor uses energy to match torque and RPM to the changing demands of the application. The variable 2-speed (0-400 and 0-1,500 RPM) covers a wide range of drilling and driving applications. The compact and ergonomic design comes in at only 7-5/8-Inch long and weighs only 3.8-Pound for reduced operator fatigue.