... and crystallize Granite,Marble ,Terrazzo and ,Centralized control ,easily operation stone grinding machineTypeGrinder GE-520BVoltage220V Power5.5hpRPM0-1500Work width270*520Work depth0 ... , alterable speed, folding handle and the height of Handle is adjustable. 2.Grind,polish and crystallize Granite,Marble ,Terrazzo , and clean ...