1)240KG Weiqht,4 head hand held concrete grinder 2)380V/220V 10HP 0-1800RPM 580*580 3) ... Siemens motor 4)Efficient JS-580 four-head floor grinding and polishing ... . Applications:1, For grinding, polishing, renovation, restore, repair, and new floor applying, etc.2, On floor surfaces covering concrete, epoxy, stone, marble ...