air compressor oilless , without oil, silent for meical equipment ,dental unit high quality, low price Model: HK-3EW-45Power: 1100W(1.5HP ... )Supply Voltage: 220V AC ,50 HZ (220V AC, 60HZ 110V AC, 60HZ)Air Displacement : 140L/minNoise ... of dental equipment, such as dental chair ,silent oil free air compressors, suction units ,LED curing light. Our products are warmly welcomed ...