Crafted from brass, this set features automatic closing function and ball desigs, providing excellent sealing and easy installation or removal Perfect for use in car air conditioning Systems maintenance and repair, allowing for quick Cooling Agent detection and recharging with ease The R1234yf Quick Couplers set is designs for smooth conversion from R1234yf to R134a, ensuring a secure Sealing and efficient operate for your car ' s air conditioning Systems Ideal for professional automotive technicians, Systems maintenance personnel, and enthusiasts who require Stable tool for their work This set includes both high pressure and low pressure adapters, making it versatile for various applications, including refrigerator freons recharges hoses and oil injectors, Manufacturer: HVRFJXI