If you are looking for a professional and portable vacuum pump, then your research is here. That's because our products can meet your demands. It is made from reliable materials and , and practical, can be used for air sampling, instruments, equipment, chemical industry, household appliances and more fields. Features - Color: black, silver. - Material: Aluminum alloy, copper, ABS. - Size: 8.30X6.00X5.00cm/ 3.26X2.36X1.97inch. - This is an air pump, vacuum design, which is a gas device mainly used for a variety of purposes. - Small structure, lightweight, low noise and low power consumption, to provide you with good using feeling. - Made from reliable materials, workmanship, very practical and supporting longer service life. - It is widely used in air sampling, instruments and equipment, chemical industry, home appliances and so on. - Quick-fill and high pressure design of this air pump for faster and efficient inflatable experience. Specification - Working voltage: 9V~14V - Rated voltage: 12V - Rated : 500mA - Rated power: 6W - : 5L/min - Vacuum degree: 65kpa - Maximum pressure: 120kpa - Noise: <60db - Suitable for 4.5-6mm . Mainly about hardness. The largest part of the outer diameter is 6.5mm. Package list: 1 x Vacuum Air Pump