... insulation 2.Using strong motor, extended product's life angle grinder 1.Single insulation2.Using strong motor, extended product's life3 ... low price,long working 3.stable perfermance 4.less vibrationAdvantage: Angle grinder is fast grinding ,high smooth efficiency,remarkable quality with low ... -Load Speed6800 r/minFrequency50/60 HZMax Wheel Diameter180mmWeight7.3KGPackingCarton angle grinder