The DUTUX R410A Brass Refrigerant Adapter is a precision-engineered fitting used to connect refrigeration service tools and hoses to R410A mini split air conditioning systems. Made from high-quality brass/copper alloy, it offers excellent durability, corrosion resistance, and reliable leak-free performance. It enables connection between 1/4″ service hoses and 5/16″ R410A service ports, making it ideal for modern HVAC servicing. The SAE female nut with depressor ensures smooth connection while preventing refrigerant loss. Manufactured with advanced machining and strict quality control, it provides precise threading, high dimensional accuracy, and dependable sealing for professional technicians.