Oil free air compressor Piston type Oil free air compressor FEATURE: Oilless, membrane type, low noise, no air polluted The vacuum gauge can show the vacuum degree ... vacuuming Low noise, about 50dBAC110V/220V,50/60HZ 1/4HP Air flow: 68L/min Vacuum Rate: 600mmHG With pressure gauge and ... air let-in valveConnect with 1/4"BSP Packing: color box ...