signal Bracket for Two signal heads. Has wooden style deck boards. Needs 3/32 and 3/16 brass tube to complete. They can be made operational with 3 MM LEDs and magnet wire. Remove attaching tabs to base. Tube mounting hole on top and bottom. Heads can be stacked mounted to 3/32 tubes on top of bracket deck. Lower tube is 3/32. These look so much better painted with craft paint than the died black I just list the cheaper white.