[Wide scope of application] Refrigerator fluorine meters can be used in all car air-conditioning, commercial and household air-conditioning and refrigeration systems. The gauges are marked with R12, R22, R404A and R134A pressure readings.[ free charging hoses in 3 colors] AC manifold meter set is equipped with hooks and 3 hoses (red for high pressure, for low pressure, and yellow for vacuum refrigeration s.)[Hose pressure] specification (low): 0-350 PSI, for fluoride pumping, can not be pressed, red specification (high): 0-500 PSI, fluorine can be added, burst pressure: 2500PSI, maximum working pressure: 600PSI, Celsius unit with easy-to-read dashboard.[High-quality material] Metal pressure regulating valve, beautiful and durable. interface, anti-corrosion, not easy to rust. High-quality refrigeration tube, high tightness.[Product function] universal air conditioner is suitable for air extraction and pressure operation of refrigerators, and is used for filling and cooling of air conditioning systems, and displays real-time system pressureMeasuring diameter: 7 cm/2.8 inch pipe length: 80 cm/36 inchWorking temperature: -20C to 60CMaterial:metalcolour:Red+ +yellowPackage Contents:1 * -tube pressure gauge3 * pipe1 * Hook the above package content, products are not included.Note: shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.