Hunter HSBE075 .75" Male Thread x Insert Spiral Barb Elbow have an innovative spiral-to-sealing barb design that makes them stronger and easier to install in any setting. A unique spiral barb leads to a sealing barb creating a leak-free connection, even at high operating pressures. These extremely durable fittings are designed for use with Hunter FlexSG tubing and other brands for a customized swing joint — no tools required.