Works on Car Freon Charging and Evacuation Multifunctional A/C Gauge Set, professional 4 valve automotive air conditioning diagnostic manifold gauge set will compatible with R1234YF R134A R404A refrigerants, perfect for AC freon charging, evacuation, diagnostic check and recovery work. 2. Extra large and colored dials with fahrenheit degree unit is easy to read, gauge rated 800psi (red) and 550psi (blue) max pressure. Sight glass design will help you see the flowing liquid refrigerant, when charging the refrigerant. 3. Include 4 pieces extra long 5FT and high impact hose, thickening hose body with precise valve core depressor and 45 degree bend on one end for convenient access. Hose rated 800psi max max working pressure and 4000psi burst pressure. 4. Precise movement with upgraded gauge shell, stands up to heavy use and accidental drops, all metal parts made from durable brass and aluminum materials. Great for your home garage or mechanic shop. 5. Come with every thing you need for a efficiently ac charging work, package include: 4 valve gauge, 4pc hoses, 2pc Adjustable R134A Adapters, 2pc R134A convert to R1234YF adapters, adjustable can tap, tank adapter, calibration screwdriver, valve core remover, gloves