This is a Gunmetal Grey shader creating in Maya using V-Ray shader nodes. No texture files are used or needed to use this file. Just apply it to your model and render.
The OBJ file won't have the shader on for obvious reason. We just thought we would also supply the example geo/sphere so you can add the shader to it if you wish.
Perfect for games, animations, CGI / VFX projects.
If you require any other formats or have any questions, please feel free to drop us a message.