Features: The R1234yf Quick Couplers set is designs for smooth conversion from R1234yf to R134a, ensuring a secure Sealing and efficient operation for your car's air conditioning system. Crafted from high quality brass, this set features automatic closing function and ball lock design, providing excellent sealing and easy installation or removal. Ideal for professional automotive technicians, system maintenance personnel, and DIY enthusiasts who require reliable tool for their work. Perfect for use in car air conditioning system maintenance and repair, allowing for quick Cooling Agent detection and recharging with ease. This set includes both high pressure and low pressure adapters, making it versatile for various applications, including refrigerator freons recharges hoses and oil injectors. Specifications: Material: brass Length: about 72mm/3inch Package Includes: 2xQuick Coupler set note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.