Features: brass construction, quick connect, good tensile strength and resisting corrosionUtility adapter: converts the 5/16 inch SAE charging-vacuum ports (new R410a style) to accept 1/4 inch SAE gauge-hose set; 1/4 Inch male SAE x 5/16 inch SAE female adapterCome with full thimble: it will not open the air conditioning core tube during the course of the operation, completely solve the problem of fluoride leakage injury. The coupler nuts are deeply knurled for quick finger-tightening; With 45angle on the service port site for easier accessApplication: converts new R410a style 5/16 SAE service ports to accept older 1/4 SAE gauge hoses, great fits for R410a mini split system air conditioners, HVAC and refrigeration servicesize:6.6*1.2*0.5cmMaterial:brasscolour:GoldPackage Contents:4 * Adapter connectorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.