The Milwaukee® M18TM FUELTM string trimmer with QUIK-LOKTM, designed for landscape maintenance professionals, provides the power to clear thick brush, reaches full throttle in under 1 second, and delivers up to 1 hour of run-time per charge. The cordless string trimmer is made of two components ? the M18TM FUELTM power head with QUIK-LOKTM and QUIK-LOKTM string trimmer attachment. This M18TM FUELTM power head, part of the QUIK-LOKTM attachment system, is compatible with multiple attachments such as our edger, articulating hedge trimmer, and pole saw attachment. This allows attachments to be swapped out on a single power head, delivering ultimate versatility and a lower cost of ownership. The POWERSTATETM brushless motor delivers up to 6,200 RPM with up to a 16 in. cutting swath, and gives you the power to maintain speed in demanding applications without bogging down. The motor is positioned in the rear of the trimmer to provide the best combination of power, balance, and maneuverability. REDLINK PlusTM intelligence ensures maximum performance while protecting from overload, overheating and over discharge. The advanced electronic package delivers instantaneous throttle response, high and low speeds, and a variable speed trigger for ultimate control over the power range. The M18TM REDLITHIUMTM HD9.0 battery (sold separately) provides best in class performance and run-time in all applications, delivering up to 1 hour of run-time per charge. The easy load trimmer head offers an easy line loading experience and enables reloads of 25 Ft. of trimmer line in under 30 seconds. The M18TM FUELTM string trimmer with QUIK-LOKTM is part of the M18TM system which is fully compatible with over 175 tools.