The Bosch GWS18V-45 angle grinder is the ideal portable cordless grinder for electricians, plumbers and others who need professional power. It features outstanding cutting ability and is optimized for metal applications. With its four-brush motor design and optimized gear structure, it provides up to 10,000 no-load RPM, to handle cutting and grinding applications. It features a two-position Vibration Control side handle for better handling and less fatigue. It is designed for long life, with Bosch's electronic cell protection, electronic motor protection and optimized brush design. For user protection, this cordless grinder was engineered with a tool-less quick-change, burst-resistant wheel guard and restart protection to avoid accidental startup. Lifetime brush design provides durability for long motor life. Electronic Cell and Motor Protection offers long runtime and 2x lifetime.