stone engraving machine 1.high speed 22000r/min,high power 380w 2.grinder diameter 6mm,weight 1.1kg,220 V 3.Excellent quality stone engraving machine1.high speed 22000r/min,high power 380w2.grinder diameter 6mm,weight 1.1kg,220 V3.Excellent quality Model Stone engraving machine Voltage 220V Frequency 50-60HZ Power 380W Grinder diameter 6mm Speed 22000r/min Weight 1.1kg Packing size 27*11*9cm3