8" long stub-out bullet with 1/2" PEX-A (F1906) expansion inlet and spin closed outlet. Used for transitioning between PEX-a tubing and copper pipes to stub out of the walls or floors. Spin closed outlet simplifies pressure testing and prevents dirt and debris from getting inside the pipes during construction. Copper pipe size is 1/2" (5/8" OD) and allows to connect a 1/2" sweat or 5/8" OD compression outlet stop valve. PEX side is connected using expansion method (expander tool + expansion rings).