RUBBER AND COPPER MATERIALS: The air conditioning valve core is made of rubber and copper, which are very sturdy, wear-resistant, strong, and hard. These accessories can resist oil, shock, and waterproof, have a long service life, and are suitable for long-term use. GOOD PERFORMANCE: The valve core of the automotive air conditioning part has excellent air resistance, improving thermal stability and oxidation resistance. AV Valve Replacement - The AC Schrader valve is suitable for replacing leaking refrigerant valve cores. Very suitable for replacing old or damaged air conditioning valve cores. APPLICATION: The air conditioner removal tool combination kit is suitable for R134A refrigerant and automotive air conditioning valve cores for cars and household air conditioners. It has heat resistance and high pressure resistance. EXTERNAL THREAD: M6, air conditioning valve core, R134a automotive air conditioning accessory, suitable for replacing and maintaining automotive air conditioning