Professional valves cores : Safely remove and install valves cores without losing refrigerant, ensuring a tight, leak easy seal for stable systems repairs. Perfect for both professional mechanics and enthusiasts. Broad Compatibility Across Systems : Works seamlessly with R134A, R1234YF, and R22 automotive air conditioning systems. suitable for standard, JRA, and valves cores, making it ideal for various vehicle models. Effortless Step operate : This all inclusive set simplifies valves cores replacement—no additional tools needed. Quick and easy installation ensures efficient repairs every time. strong Copper Aluminum Alloy Construction : Built with materials for excellent erosion resistance and thermal conductivity, ensuring long lasting in demanding conditions. Portable & Organized Storage : Includes a strong ABS case to protect tools from drops and wear while keeping neatly organized. Ideal for mechanics and on the go repairs.