The M18? FUEL? 4-1/2 in. to 6 in. braking grinder is Milwaukee’s most powerful small angle grinder to date, with a high performance brushless motor that generates 13 A corded power. The POWERSTATE? brushless motor delivers 9,000 RPM, giving the tool the power needed to exceed performance expectations in all applications, as well as longer motor life, providing lower cost of ownership compared to brushed motors. Integrated Rapid Stop? braking technology stops all accessories in 3 seconds or less, creating a safer user experience. By offering a full 6 in. capacity, users can feel confident replacing their corded tools with the M18? FUEL? 4-1/2 in. to 6 in. braking grinder. The power and runtime delivered by the M18? 6.0 high output batteries provides the user with more material removed per charge, making users more productive and efficient on the jobsite. Tool-free accessory changes using the FIXTEC nut and guard adjustments mean less downtime during work. Grinding wheel sold separately.