This is 3D printable model of the Galaxy Class NCC-1701-D Enterprise from the Star Trek. It is a kit. The different colored parts are separated for easier printing.
Pieces of the necelles and some details need to be separated into separate models in the slicer ;)
In the suffix of the files, there are color codes:
g-grey
bl-blue
d-dark
br-bronze
r-red
For the assembly, please have a look at the following video.