Description: Wide Compatibility: This air conditioner refrigerant pressure gauge set is designed for use with a wide range of refrigerants, including for R22, R134a, and R410a. Its compatibility allows for effective use in a variety of cooling systems. High-Quality Construction: This pressure gauge features a sturdy, all-metal bulb that withstands harsh use and enhances operational efficiency. The engineering-grade plastic housing provides comprehensive protection, extending the instrument's lifespan. Enhanced Safety Features: Equipped with a four-color explosion-proof refrigerant hose made of synthetic rubber, it has a maximum operating pressure of 800 PSI and a burst pressure of 4000 PSI. High-pressure and aging resistance ensure safety and reliability. Precise Measurement: The dual-valve, four-way brass pressure gauge includes a low-pressure gauge from 30 to 500 PSI and a high-pressure gauge from 30 to 800 PSI. Clear scale markings are included. Convenient Hanging Design: The included hook allows for easy mounting in a vehicle or anywhere, allowing for easy access during use. The user-friendly design makes refrigerant pressure testing and maintenance more convenient. Package: 1 set of four-way for R22, R134a, R410, and AR40A pressure gauges for household and automotive air conditioners.