This is a 1.12.2 - 1.18.2 map. It features a 10 blocks radius nuclear reactor core model with 48 plutonium bars and also 48 yellow cooling pipes. This model can be used for any version higher than 1.12.2, as it features blocks that weren't in the game before 1.12.2 so use the advised game versions to prevent any map corruption or missing blocks.