The .vismat Material Collection contains 140 high quality .vismat materials for use with VRay for SketchUp and VRay for Rhino, most of which are new and not included in the standard ‘Sample Materials’ distribution.

A wide range of material types are included such as the following:

Architecture, Car Paint, Cloth, Emissive, Glass, Leather, Liquid, Marble, Metal, Misc, Plastic, Porcelain, Rubber, Stone, Wax, Wood

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Free Download!
http://www.vray.com/free_vray_tools/vismat_material_collection/index.shtml