... 8, Wheel ajustment for different floor surface 9, Alloy water switch 10. With vacuum hose ... work without dust when working under dry condition. 11, Alloy water switch, which is beautiful and ... 5HPVARIABLE 0-1800RPM270X550(MM)220KGS4PCS6PCS20kgs30L Standard configuration:1, Machine body2, 20kgs extra weight - 1 ea3, 10m ... discount: availablePictures: JS-550B four head floor grinding and polishing machine