Sci-Fi Tunnel Pack
This pack has modular parts that match each other so it can be used for creating a sci-fi tunnel as big and as complex as you want.
The polycount of all the parts together is 20106 polys
All parts use the same material, and this one have PBR textures with a resolution of 4096×4096 and these textures are:
Albedo
MetallicandSmoothness
Emissive
Normal
Original_Link: https://assetstore.unity.com/packages/3d/environments/sci-fi/sci-fi-tunnel-pack-196499