The Milwaukee M18 FUEL 4-1/2 in. - 6 in. Braking Grinder, Paddle Switch, No-Lock is the highest performing small angle grinder. It generates the power of a 13 Amp corded grinder, brakes all accessories under 3 seconds and has 6 in. grinding capacity. The POWERSTATE Brushless Motor provides users with 9,000 RPM and the power equivalent of a 13 Amp corded grinder, delivering industry-leading performance. REDLINK PLUS intelligence ensures maximum performance and protects the angle grinder from overload, overheating and over discharge. The Rapid Stop Brake feature stops all accessories in under 3 seconds.