This texture is FREE for commercial use.
These are acoustic foam used for soundproofing in studios. This kind of tiles has a lot of forms such as wedges, pyramids. A pyramid is one of the effective shape to absorb sound.
These black tiles can be turned into different colors or even a checker pattern by the Substance 3D Designer SBSAR file. The randomness of the position offset can also be set.
Check out this free PBR texture at
https://www.texturecan.com/details/375/