The AC Inverter provides electronicvariable speed from 200-1,800rpm for wide range of sanding operations Motor 1100 W / 230 V, S1 100%Max. thickness 100 mmMin. thickness 0.8 mmMin. length Sanding - 60 mm/Brush - 90 mm(adjustable)Max. width 960mm (2 passes)Brush/Drum Diameter ø 127 mmBrush Drum Length 480 mmBrush Drum Speed:Variable : 200 - 1,800 RPMBrush : 200 - 1,000 RPMDrum : 1,500 - 1,800 ...