Bosch GWS13-50VS 5" Variable Speed Angle Grinder with Lock on Slide Switch 13A delivers more power than previous-generation models with the same size tool – 13 amps and up to 11,500 RPM. The lower variable-speed setting – 2,800 RPM – allows the operator to match speed to application. For operator comfort and control, it sports a two-position Vibration Control side handle, making it less demanding to run. The grinder has constant electronics for easy starts, level operation and dependable speed under load. For user security, it an integrated acceleration sensor to limit inadvertent recoil and restart protection to protect against unintended startup. It has a burst-protection quick toolless adjustable guard and a large spindle lock for more convenient disc change. It was designed with directed air flow to divert dust from vital components, direct-motor cooling and Service Minderbrushes that stop the grinder when preventative maintenance is required – which promote longer tool life.