The FJC 6009YF R1234yf High Side Quick Coupler is a precision-engineered fitting designed for use with R-1234yf automotive air conditioning systems. It features a 0.25-inch male fitting and a high-side quick-connect interface, allowing technicians to easily and securely attach service hoses to A/C systems. Built with durable brass construction, this coupler ensures leak-free performance and long-term reliability. It's ideal for professional A/C service tasks, offering compatibility, ease of use, and rugged dependability.