The format is OBJ, STL, 3dsMax. Model for printing on a 3d printer. Version 3ds max 2015 and higher.
STL (Stereolithography, filesize: 61.1 MB), OBJ (OBJ, filesize: 84 MB), FBX (Autodesk FBX, filesize: 63.5 MB), MAX (Autodesk 3ds Max, filesize: 56.7 MB)