... Air Compresso for ONE Chair Piston Type Dental Silent Oil Free Air CompressorSpecification: ModelGA-61BrandGreeloy (made in China)Power600WVolt./Hz110~240V ... feet, reduce vibration during operation. 3, PURE AIR FLOW. Oil free design, no lubrication oil needed during operation. 4, CORE TECHNOLOGY ... , pure outlet air flow for medical equipments. Super Silent Oil Free Dental Air Compresso for ONE Chair