3 Color (2500~500)PSI 1/4 "SAE-1/4" SAE AC Charging Hose Set For HVAC Air Condition Refrigerant R12 R22 R502 Color: red & blue & yellow Material: brass+Plastic Length: 1m Screw thread: 1/4 "SAE-1/4" SAE Working pressure: (2500~500)PSI