Cheston 2.6m³/min 600watts/15500 RPM 70 Miles/Hour Electric Air Blower Dust PC Cleaner 600W motor produces 15,500 RPM of motor speed. Lock on button for constant air flow Amazing air blowing speed of 70 Miles/Hr (2.6m3/min) in a compact, easy to handle size Great electric broom for garage floor, sidewalks, clearing dust from computers and saw dust from power tools, or a touch-less dry on your car Easy to service and change carbon brush design. NOTE : CHANGE CARBON BRUSH REGULARLY TO AVOID DAMAGE TO MOTOR