The M18 FUEL 125mm (5") RAPID STOP Angle Grinder is designed to complete the toughest grinding applications. The POWERSTATE Brushless Motor delivers up to 9000 RPM, while the RAPID STOP Brake performs at under a 3 second stop time. REDLINK PLUS intelligence ensures maximum performance and protection from overload, overheating and over discharge. Tool-free accessory changes using the FIXTEC nut and guard adjustments mean less downtime during work.