Made from brass, painted, with Working 3volt dc lamp and coloured lenses with piano wire control rod which is designed to be connected to a servo motor (not included). They require a hole for control rod and lamp wire hole through baseboard and have 4 holes that can be used with track pins (not included) or can be carefully glued in place (recommended). Price is for one signal. Sorry for pictures of signal in layout setting as I'm a OO gauge modeller and have no O gauge props to display it properly. For peace of mind please read positive feedback for this item. Please see my other listings for ground shunt signals.