Efficient BL Brushless motor is electronically controlled to optimize battery energy use * BL Brushless Motor delivers 1,420 in.lbs. of Max Torque * Variable speed (0-2,500 RPM and 0-3,200 IPM) for a wide range of fastening applications * Convenient 1/4in hex chuck for quick bit changes * Built-in L.E.D. light illuminates the work area