Features: 1.Product Function: to measure gas single-phase non-pulsating flow 2.Beautiful appearance, lightweight, unbreakable, and long service life. 3.Mainly used to detect and control the flow of oxygen, gas flow can also be detected. The housing can be used for industry, oxygen bars, and other occasions that need to calculate gas flow. 4.Each product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified, which include Part Number, Model Number and inspection Date information; 5.If you have any question about the item, please provide us the Manufacturing Part Number for checking, your profits will be guaranteed. Material: Acrylic + Plastic + Metal Size: 120 x 72 x 20mm/4.72 x 2.83 x 0.79inch (L x W x H) Connection: 8MM pagoda (hose connector) Center Distance: 94.5mm Applicable Medium: Gas Accuracy: 5% Flow Range: 3-30LPM Working Pressure: 0.6Mpa Operating Temperature: 0-60 C Color: Multicolor (As pictures show) Weight:100g Package Include: 1 x LZQ-7 Oxygen Flowmeter