18-Volt LXT Lithium-Ion Brushless Cordless Impact Driver Kit with (1) Battery 3.0AhBL brushless motor delivers 1,500 in. lbs. of max torque Variable speed (0 3,400 RPM and 0 3,600 IPM) for a wide range of fastening applications Efficient BL brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge BL brushless motor eliminates carbon brushes, enabling the BL motor to run cooler and more efficiently for longer life Electronically controlled BL brushless motor efficiently uses