Name: Perforated metals
Formats: 3Ds Max 2015, OBJ
Units: Centimeters
Preview renderer: Corona
Corona physical materials
Seamless textures
Texture sizes: 4096*4096
The VRay displacement modifier is used in the VRay version to achieve more accurate results
More metals:
https://3dsky.org/3dmodels/show/hammered-metal-surface-pack 
https://3dsky.org/3dmodels/show/shampagne-bronze-surface-pack