Artstation ? Smart Materials SP BEST
Commercial use of the materials is permitted but nothing can be included in a asset pack or sold at any sort of asset/resource marketplace and must be embedded components in media such as a video game, movies, or similar products.
Artstation – Smart Materials SP
The set is mostly about grunge materials, containing 45 smart files for your models Substance Painter (.spsm files). Basically, this pack can help you deal with basic surfaces presenting realistic surfaces.