Viega 77392 3/4"x1/2"x1/2" Copper Tee. This 3/4"x1/2"x1/2" Copper Tee is a top of line fitting designed to reduce time, and increase reliability. This Tee is a great way to connect three pipes running is different directions, or send a smaller pipe running to a fixture. Some of the improved features of using ProPress include colored dots on each fitting, a quick and efficient way to see if the fitting has been correctly pressed, a manufacturing warranty, and cleaner more convenient connection that's 75% labor saving. ProPress requires one tool, no flame, and has a worldwide credibility of quality.