Two 9 light signal heads. Has the individual sun shade. Needs 3/32 brass tube to complete. They can be made operational with 3 MM LEDs and magnet wire. Remove attaching tabs. Tube mounting hole on top and bottom. These are low cost signaling for the Pennsy model railroader. Heads can be stacked mounted to tubes on top and bottom. These look so much better painted with craft paint than the died black I just list the cheaper white.