This 5 piece package of specialty pipe fittings is perfect for any business or industrial use. With a connection type of NPT and model of Reducing Hex Nipple, these fittings are equivalent to the Swagelok SS-16-HRN-4. Made of high-quality materials, these fittings are built to last and provide reliable performance. They are ideal for use in hydraulics, pneumatics, pumps, and plumbing.