Makita Impact Driver Brushless XDT13Z 18V LXT Cordless, (Brand New, Tool Only) BL Brushless motor delivers 1,500 inch pounds Of max torque Variable speed (0 to 3,400 RPM & 0 to 3,600 IPM) for a wide range of fastening applications The 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 percent longer run time per charge The electronically controlled BL Brushless motor efficiently uses energy to match torque and RPM to the changing demands of the application