These cylindrical fittings, known as reducing couplings, are used to connect two pipes of different diameters. They can be used to add height or length to table legs, bar stool legs, clothing racks, and more by attaching two pipes together. Our fittings are made from durable, industrial-grade malleable iron, 100% authentic, and built to stand the test of time. You will know PIPE DECOR parts and accessories when you hold them—beauty and beast, strength and style. These are real industrial fittings for your decorations and designs, so accept no substitutes. Extra pieces and accessories are available for custom projects and expansions, allowing for plug-and-play as desired. Ideal for any DIY project, our iron fittings complement a wide variety of aesthetics, including steampunk lighting, industrial, factory, French country farmhouse, vintage, retro, reclamation, DIY customized, modern, and more. We recommend cleaning and sealing each fitting before use. IPS threads ensure compatibility with other project materials such as lamp parts and valves, and these fittings work seamlessly with any pipes, fittings, and PIPE DECOR furniture kits.