DOCUMENTATION:  There are two ZIP files in this download. One is 'Archive.zip' and other one is 'Render Samples.zip'

 'Archive.zip' is the file with the blender 3D model. Once you extract this file, you can find the blender 3D file. All the textures are packed with the file. You can extract the textures from node editor or you may apply any other textures of your choice.

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Formats included: 

.blend

.fbx

.obj

.dae