Milwaukee 2426 20 M12™ Cordless Multi Tool Framing more work per charge and 1 MX FUEL ROCKET more work per charge and more work over the life of the pack than competitive batteries 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% 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 Compact and ergonomic design at only 14 1 4" long Weighs only 5 000 OPM and allows users to match the speed to the application electronics