Mame Arcade Bezels?

What are these Arcade bezels? They're amazing! How do I add them to Mame?

https://www.youtube.com/watch?v=Abu3...ZL-tEdC97mD3tE

https://www.youtube.com/watch?v=JP7k-xL6j9o


https://forums.libretro.com/uploads/...5b36b6f708.jpg

https://forums.libretro.com/uploads/...df95e96139.jpg

https://forums.libretro.com/uploads/...0207c7ca57.jpg

You go to a site that has MAME artwork, download the wanted files, and put them (as is) into your artwork folder.

Ok this I have to try.