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 6.5mm 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. For peace of mind please read positive feedback for my items. Please see my other listings for ground /shunt signals.