The SM Model Railways Red/Green Model Railway Signal Lights X2 are ready-to-go signal lights designed for model railways. Made in the United Kingdom, these pre-built lights feature a light function and are suitable for OO gauge model trains. The set includes two signal lights, one red and one green, perfect for adding realism and detail to your railway layout's transportation-themed display. Ideal for railway enthusiasts looking to enhance their collection with authentic-looking signal lights.