This premium R410 brass adapter provides a reliable connection solution for HVAC technicians working with mini split air conditioning systems. The adapter features a 1/4 inch Male SAE to 5/16 inch Female SAE configuration, allowing standard charging hoses to connect seamlessly with R410 imported mini split units. Constructed from brass with a gold finish, this adapter ensures durability and long-lasting performance in demanding HVAC applications. The low-loss design minimizes refrigerant loss and includes anti-backflow functionality for efficient operation. With a compact thread diameter of 0.43 inches and overall of 0.63 inches by 1.61 inches, this adapter fits easily into tight spaces while maintaining a secure connection. The brass construction provides excellent resistance to and wear, making it ideal for repeated use in professional HVAC service environments. Perfect for technicians performing maintenance, repairs, or installations on R410 mini split systems, this adapter ensures proper compatibility between standard 1/4 inch hoses and 5/16 inch mini split connections. Each package includes one brass adapter ready for immediate use in cooling services and HVAC tasks.