MARATHON MOTOR; SAFETY SWITCH.USER BENEFITS:Metabo Marathon motor with patented dust protection for long service life.Rotating back handle and side handle can be mounted at 3 positions for optimum handle position also when cutting.Tool-free adjustable guard; twist-proof.Metabo VibraTech (MVT): integrated damping system and side handle to reduce vibrations in order to protect the user?s health.Metabo safety switch prevents unintentional start.Auto-stop carbon brushes to protect the motor.