1/4 Inch Male SAE x 5/16 Inch SAE Female Adapter: This R410A adapter is designed to convert the 5/16 inch SAE charging-vacuum ports on your R410A mini split system air conditioner to accept 1/4 inch SAE gauge-hose set. It features a 1/4 Inch male SAE connector and a 5/16 Inch SAE female connector, allowing you to connect the gauge-hose set to the charging/vacuum ports for efficient refrigerant charging and maintenance. Universal Fit: The R410A adapter is compatible with most newer R410A ductless mini split systems. It is perfect for HVAC and refrigeration service applications where you need to connect a gauge-hose set to the charging/vacuum ports. High Quality: Made with high-quality materials, this adapter is built to last and provide reliable performance. It is designed to withstand the harsh conditions of HVAC and refrigeration service work. Easy to Use: The R410A adapter is easy to use and install. It features a compact design that allows for easy access to the charging/vacuum ports on your mini split system. It also has a secure locking mechanism to ensure a tight and leak-free connection. Reliable Performance: With its reliable performance, this R410A adapter is a must-have tool for any HVAC or refrigeration service professional. It allows you to connect a gauge-hose set to the charging/vacuum ports quickly and efficiently, reducing downtime and improving your service efficiency. This R410A adapter is used on most newer R410A ductless mini split systems and is perfect for HVAC and refrigeration service. It converts the 5/16 inch SAE charging-vacuum ports to accept 1/4 inch SAE gauge-hose set. The 1/4 Inch male SAE x 5/16 inch SAE female adapter is made of high-quality materials and is durable and reliable. It is a must-have for any HVAC or refrigeration service professional who needs to connect 1/4 inch SAE gauge-hose set to 5/16 inch SAE charging-vacuum ports on newer R410A ductless mini split systems.