Penitue 4pcs Car AC Valve Caps for R134a System, Brass High & Low Pressure Service Port Caps Leakproof Covers American Car Accessories for Most American Brands Vehicles

["Package List: You will receive 4 brass car air conditioning valve caps, offering full protection for your vehicle's AC charging ports and ensuring system integrity and vehicle parts for US R134a system.","Durable Material: These AC valve caps for cars are crafted from durable copper and rubber, offering excellent wear resistance and long-lasting performance. They are specifically designed for prolonged use in automotive air conditioning systems.","Size Information: The diameter of the air conditioning valve cover (H) is 1.9cm/0.75in and 2.1cm/0.83in. The diameter of the air conditioning valve cover (L) is 1.6cm/0.63in and the height is 2.1cm/0.83in.","Easy Installation: With a simple, tool-free design, these valve caps can be easily installed in just a few steps. Simply locate the H (high) and L (low) pressure ports on your car's AC system, match the caps to the correct ports, and screw them on by hand until secure.","Enhanced Leak Proof Design: Each brass valve cap features precision threads and a built in rubber O-ring gasket, creating a tight,secure seal that effectively avoids refrigerant leaks and blocks debris from entering the AC service ports, protecting your system."]