Specification Model: BA-1 Voltage/Frequency: 110V/60Hz Power: 1/4HP Rotating Speed: 1720r/min Inlet Port: 1/4?SAE Flow Rate: 3.6CFM Ultimate Vacuum: 0.8Pa/6Microns Oil Capacity: 250ml Weight: 5.5kg Dimensions: 249*121*230mm Vacuum Gauge: inHg/mbarPackage include ?1x Vacuum Pump ?1x Bottle of Vacuum Oil ?1x English User's Manual Product Features 1?High Efficiency and Low Noise.Higher flow rate and vacuum degree compared with similar products 2?.Unique appearance design, high strength rubber handle which is suitable for ergonomic 3?.Superior design on oil entering system: Oil and gas separated thoroughly, no oil mist, reduce pollution 4?.Large sight glass with scale: Minimum and maximum scale to avoid damaging vacuum pump and also improve your work efficiency 5?.Oil Anti Flow-Back Design: The gas inlet is specially designed to prevent oil form flowing back, preventing the container and hoses from being polluted 7?.Exhaust Port with Exhaust Cap, Direct Drive Motor Allowing Easy Starting Which is Maintenance Free 8?.Alloy aluminum casing and high volume cooling fan: Good heat dissipation to keep the pump running efficiently and for a longer life The BACOENG rotary vane vacuum pumps are used to obtain a vacuum by pumping gas from a sealed container. They are extremely useful in refrigeration repair, medical appliances, printing machinery, vacuum packing, gas-analysis, and hot-forming plastics.