Those who work in versions of V-Ray below 3.1, be careful. In the materials of the BRDF section, Microfaset GTR is installed; if the version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever is more convenient for you...
MAX (Autodesk 3ds Max, filesize: 20.9 MB), FBX (Autodesk FBX, filesize: 14 MB)