1、Compatible with R134A Dystem: Professionally designed air conditioning systems for R134A refrigerant, suitable for most modern vehicles and some household air conditioners, ensuring precise charging and diagnosis, and improving maintenance efficiency. 2、Self Sealing: Equipped with innovative self sealing canned joint, simplifies the refrigerant filling process, effectively prevents leakage, protects the environment, reduces waste, and makes operation safer and more convenient. 3、Integrated Core Tool Kit: Includes necessary valve core tools and core components for easy on-site maintenance and replacement. 4、Accurate Pressure Reading: The high-precision pressure gauge provides clear readings on the high and low pressure sides, with color markings that are easy to identify, helping to quickly diagnose air conditioning system abnormalities. 5、Safe and Durable Design: Made of premium-quality materials, wear-resistant and corrosion-resistant, ensuring reliability and stability under long-term use.