Metabo Marathon motor with patented dust protection for long service life Deadman's switch for high user protection 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 Characteristics Disc Ø: 230 mm / 9"Rated input power: 2400 WOutput power: 1600 WNo-load speed: 6600 rpmSpeed at rated load: 4600 rpmTorque: 17 Nm / 150 in-lbsSpindle thread: M 14Handle circumference: 144 mm / 5.669"Weight (without power cable): 5.8 kg / 12.8 lbsCable length: 4 m / 13 ftVibration:Surface grinding: 6.2 m/s²Uncertainty of measurement K: 1.5 m/s²Grinding with sandpaper: 2.5 m/s²Uncertainty of measurement K: 1.5 m/s²Noise emission:Sound pressure level: 94 dB(A)Sound power level (LwA): 105 dB(A)Uncertainty of measurement K: 3 dB(A)