1Fitment: These air conditioning valve core are suitable for R12 automotive air conditioning parts, good pressure resistance, can be used for a long time. 2Material: Automobile air conditioning valve core is made of steel and rubber green ring, exquisite technology, can achieve stable use, with strong wear resistance and functionality. 3Sturdy Structure: Air conditioning valve core overall is solid, compact, excellent texture, with impact resistance, scratch resistance, and not easily broken or deformed. 4Improved AC Performance: With a new and efficient R12 valve core, you'll experience improved performance from your car's air conditioning system, including faster cooling times and more consistent temperatures. 5Easy Install: These automotive air conditioning valve core are easy to use and easy to install. Easy to install without complex tools, saving you time and effort. 100 x AC Valve Core