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 good craftsmanship, 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