navod3d
Really useful textures.
25 Physically Base Render Material 8 Map Collection
These Maps are Designed in 2048*2048 pixel PNG format. There's various types: abstract, architectural, nature, groundcover,...
Each Material comes with 8 maps, and can be used in PBR Shaders: Specular/Glossiness or Metal/Roughness. Additionally, there's displacement/height and ambient occlusion maps
All textures are seamless tiling, endlessly repeating horizontally and vertically.