[WIDE APPLICATION] R410 adapter used on most newer R410A ductless mini split systems. Perfectly fits for R410a mini split system air conditioners, HVAC and refrigeration service. [FUNCTION] Useful adapter, converts the 5/16 inch SAE charging-vacuum ports to accept 1/4 inch SAE gauge-hose set; 1/4 Inch male SAE x 5/16 inch SAE female adapter. [45 DEGREE ADAPTER] The coupler nuts are deeply knurled for quick finger-tightening. With 45 Degree angle on the service port site for easier access. [PREMIUM QUALITY] Adapters are made from heavy duty brass material and well-tested by the manufacturer, quick connect, good tensile strength and resisting . The r134a hose gaskets made of rubber, proof leaking correctly. Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Product Name: R410