FREE SPEED: 20,000 RPM; SANDING BELT: 10 X 330MM; AIR INLET: 1/4" (6,3 MM) ; AIR HOSE: 3/8" (10 MM); AVG. AIR CONSUMPTION: 170 L/MIN; WORKING PRESSURE: 0,63 MPA; WEIGHT: 0.78KGS; 3 DIFFERENT GRIT SANDING BELTS (60,80, 120 GRIT)