This INVERTED FLARE UNION 5/16 X 1/2 is designed for use with flareable copper, brass, aluminum, and welded steel hydraulic tubing. Its all-brass construction is UL compliant for flammable liquid and gas, and fittings meet SAE J246 requirements. Sold individually, it fits most makes and models. This product is a practical and reliable solution for hydraulic tubing connections, ensuring safety and compliance with industry standards.