... , polishing, renovation, restore, repair, and new floor applying, etc.2. On floor surfaces covering concrete, epoxy, stone, marble, granite, terrazzo, etc ... 4. Fit kinds of tools covering resin bond diamond pad, metal bond diamond pad, PCD blade, Frankfurt, sandpaper, etc. Product Features ... (); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); JS-550 dual-head concrete floor polishing machine