Where can I find these no drill solar panel mounts?

[someguyondiysolarforum]

I am thinking about adding more solar panels to my flat roof but I don't want to drill. I saw this video on youtube that shows these no penetrate solar panel mounts that is held down by bricks. my roof is a flat roof so these look like it would work.

 

[Ampster]

Search for ballast mounts for solar panels.