Milwaukee M18 FUEL 18V Lithium-Ion Brushless Cordless 4-1/2 in./6 in. Braking Grinder with Paddle Switch 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. Providing users high performance, advanced ergonomics and legendary durability, the M18 FUEL 4-1/2 in. - 6 in. Braking Grinder is designed to complete the toughest grinding, surface preparation and cutting applications with all 4-1/2 in. - 6 in. accessories. The M18 REDLITHIUM HIGH OUTPUT XC6.0 Battery delivers users with more material removed per charge and unmatched run-time in all applications. Tool-free accessory changes using the FIXTEC nut and tool-free guard adjustments mean users will experience less downtime as they work. The cordless angle grinder's grinding wheel is sold separately.