Description Made of safe material, this vacuum air pump is a very practical and professional, can be used for long time. It can be widely applied for electrical products, industrial products, vacuum fresh-keeping machine, and so on. Small in size and light in weight, very convenient to carry around to the places you want. Features - Color: black, silver.- Material: Aluminum alloy, copper, ABS.- Size:8.30X6.00X5.00cm/ 3.26X2.36X1.97inch. - The small air pump is made of safe materials, very practical and sturdy for lasting use.- The noise of this vacuum pump is very small when it is working, and it will not cause additional interference.- Widely used for electrical products, industrial products, vacuum fresh-keeping machine, etc.- Compact size and light weight, very convenient and portable to carry to the places you need.- Excellent and stable working performance, low power consumption, offers you a satisfying using feeling.Specification- Working voltage: DC9V~14V- Rated voltage: DC 12V- Rated current: 500mA- Rated power: 6W- Suction: 5L/min- Vacuum degree: 65kpa- Maximum pressure: 120kpa- Noise: <60db- Suitable for 4.5-6mm tube. Mainly about hardness. The largest part of the outer diameter is 6.5mm.Packing list: 1 x Vacuum Air Pump