<ul><br /><li>Efficient BL Brushless motor is electronically controlled to optimize battery energy use for up to 50 percentage longer run time per charge</li><br /><li>The BL Brushless motor eliminates carbon brushes, enabling the BL motor to run cooler and more efficiently for longer life</li><br /><li>The electronically controlled BL Brushless motor efficiently uses energy to match torque and RPM to the changing demands of the application</li><br /><li>Variable 2 speed 1/2 inches hammer Driver Drill (0 500 and 0 2,000 RPM) with BL Brushless motor delivers 530. Of max torque, Weighs only 4.2 pounds with battery</li><br /><li>Variable speed impact driver (0 3,400 RPM and 0 3,600 IPM) with BL Brushless motor delivers 1,500. Of max torque, Weighs only 3.3 pounds with battery</li><br /></ul>