134a This is a product specifically designed for recharging car air conditioners that use R-134a gas, helping to improve cooling performance. Specifications: * Brand: A/C Pro * Product Type: Car A/C Recharge Can. * Gas Type: R-134a. * Weight: 18 oz (510 g). * Built-in Pressure Gauge: Includes a gauge to measure the A/C system pressure, assisting in filling the correct amount. * Connection Hose: Equipped with a hose that easily connects the can to the low-pressure charging port. * Sealant Additive: Contains a substance that helps seal small leaks in the A/C system. * Advanced Synthetic Formula (Ultra Synthetic): Helps protect A/C system components and extend its lifespan. Features: * ✅ Quickly restores car A/C coolness. * ✅ Helps seal minor leaks. * ✅ Protects the A/C compressor. * ✅ Easy to use and can be installed in about 10 minutes. * ✅ Equipped with an indicator showing pressure level to avoid overfilling. Usage: * Suitable only for cars using R-134a gas. * Connect to the Low Pressure Port with the car running and the A/C on its coldest setting. * Monitor the pressure indicator during filling until it reaches the green zone (FULL). Important Note: This product is not suitable for modern cars that use R-1234yf gas, so you must confirm the type of car A/C gas before use. Also, a significant leak in the system requires repair first, as recharging alone will not solve the problem.