The FJC 6805 Low Side Dual Manual Couplers are designed for servicing R-1234yf automotive air conditioning systems. Featuring a 14mm low-side connection, these couplers offer a secure, leak-free interface for charging and diagnostics. Their dual manual design allows technicians to control refrigerant flow with precision, making them ideal for professional A/C service tasks. Built for durability and ease of use, they ensure reliable performance in demanding environments