Please watch this preview first:
https://youtu.be/jd6SVTcMYpI 
...................
Field Stone 05 | PBR | 4K | PNG | Seamless
...................
includes:
Diffuse 4K PNG 8bit
Glossiness 4K PNG 8bit
Roughness 4K PNG 8bit
Normal DX 4K PNG 8bit
Displacement 4K PNG 16bit
Ambient Occlusion 4K PNG 8bit
....................
3ds Max 2015 Corona & Vray
Fbx files Corona & Vray
Obj + mtl files Corona & Vray
SBSAR (Substance Designer file, you can export outputs in any size and any format that you need, too you can use its randomize option to create new random outputs.)