Milwaukee Cordless Grinder/Cut Off Tools are made with overload protection and tool-free burst-resistant guard features for safe and reliable use. Soft start reduces start-up torque and improves gear life. Large spindle lock allows for quick wheel replacement. Fuel gauge indicates remaining run time. Grinders are available in 18V or 28V for 9000 RPM or 8000 RPM operation, respectively. 5 Year Limited Warranty.