The air conditioning valve caps are crucial for protecting the system's service ports. By covering the ports,which can cause damage and reduce efficiency. To use, place the caps on the high and low-pressure ports after performing . This simple step helps to ensure the longevity and reliability of your vehicle's air conditioning system. Features -Color:Assorted Color -Material:ABS -Size:2.00X1.80X1.80cm/0.79X0.71X0.71in -durable materials: constructed with materials, these caps offer exceptional durability and reliability, ensuring they withstand the test of time -Precise fitment: engineered to match original automotive air conditioning components, these caps provide a precise fit, making installation and secure -Protective function: the caps effectively shield the air conditioning system's charging ports and valves and debris, maintaining system integrity and performance -Efficiency enhancement: utilizing the air conditioning service exchange system can greatly enhance repair efficiency, saving valuable time and reducing labor costs -Dual purpose design: these caps are versatile, serving both as essential repair parts and as performance enhancing upgrades for your car's air conditioning system Package list: 12 air conditioning valve covers