BL Brushless Motor delivers 1,090 in.lbs. of Max Torque 0-31,500 BPM for fast hammer drilling in masonry materials Efficient BL Brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge The BL Brushless Motor eliminates carbon brushes, enabling the BL Motor to run cooler and more efficiently for longer life The electronically-controlled BL Brushless Motor efficiently uses energy to match torque and RPM to the changing demands of the application