AC diagnostic tool for R410A R22 R404 - 3 way manifold gauge set1、Application: The 3 way AC diagnostic manifold gauge set is applicable for R410A R22 R404 refrigerants. Can be used for checking pressure in AC lines, leak determination, and charging. 2、Unique Design: The diagnostic gauge set has built in ball valve, which is easy to open and close. Dial with white background and black pointer is easy to read and display accurately. 3、Material: Made from solid aluminum, PVC, and durable plastic to stand up to heavy use and accidental drops, ensure wear resistant, impact proof and long service life. 4、Practical: Includes 3 charging hose with 3 colors for easy recognition, extra strength hoses with burst pressure at 4000PSI, maximum working pressure at 800PSI. 5、Fine Workmanship: The manifold gauge set is easy to operate, complete accessory ensure easy installation, strong sealing for high durability and safety.