The NIBCO PressACR wrot copper y-joint features two fitting ends that can be pressed on. The fitting is used to split a line. NIBCO press fittings are the fastest, easiest way to join copper tubing. NIBCO PressACR fittings are the fastest, easiest way to join copper tubing systems. NIBCO PressACR fittings are designed to join with seamless copper water tube in air conditioniong and refrigeration applications systems. The press fittings can also be installed underground. The NIBCO PressACR fittings are user friendly, quick and easy to install. When properly crimped a unique "N" witness mark is clearly visible. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. NIBCO PressACR applies the proven performance of press technology to NIBCO high pressure ACR fittings. NIBCO PressACR fittings features a full range of precision engineered copper fittings, accessories, pressing tools and jaws.