Apollo PEX 6907912CP 12 Port PEX Manifold (3/4-inch Inlets, 1/2-inch Outlets) with Shutoff Valves 12 Port PEX-B Manifold Allows individual hot and cold lines to be connected directly to each fixture Creates a single point shutoff for all home fixtures Each manifold has an equal number of hot and cold outles - Outlets are 1/2" PEX barb shut-off valves Inet sizes are 1" MPT - Each manifold comes with a reducing adapter to 3/4" PEX barb