The file 'Star Trek Constellation Class TOS 1:2000 3D Printer Model' is (stl) file type, size is 7.4MB.
Conversion of MeslesitsFleetYards original model from a .max to a .stl file for printing. Scaled to 1:2000
Find this model and more here on his Deviantart page: http://metlesitsfleetyards.deviantart.com/