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O scale [1:48] ground signal - single head - 2 of.
The head is designed to accept 3mm led's or Bivar light rods, there is a hole through the base to pass wiring through. A rear door that can be fixed using tacky glue if required to remove it in the future. Note the hoop though the model is effectively a sprue to help reducing costs in production.
Important - please look at "whats in the box" to be sure of what you are purchasing, pictures may include items that are not included for sale. If you are in any way unsure please ask before buying.