The Milwaukee M18 FUEL™ 1-3/4″ SDS Max Rotary Hammer with ONE KEY™ generates the power of a 15A Corded Rotary Hammer with a 1-3/4″ capacity, 8.1 ft-lbs of impact energy, 380 RPM, and 2,900 BPM. Designed for the professional user, the Milwaukee M18 FUEL™ 1-3/4″ SDS Max Rotary Hammer with ONE KEY™ is designed for power, control, safety, and productivity. The POWERSTATE™ Brushless Motor delivers 8.1 ft lbs of impact energy to generate corded power. REDLINK PLUS™ intelligence ensures maximum performance and protection from overload, overheating and over discharge. The M18 REDLITHIUM™ High Output HD12.0 battery delivers unmatched run-time in all applications. For maximum control and enhanced safety, the Milwaukee M18 FUEL™ 1-3/4″ SDS Max Rotary Hammer with ONE KEY™ has an Electromagnectic Clutch that prevents over rotation in case the tool gets bound up when drilling in rebar or hard aggregate. Competitive tools can rotate 360 degrees. This feature is designed to ensure users are safer and have more control on the job.