Porcelain makes such a great surface for leaning a brush while not in use! Protect the delicate hairs on the brush from contact with hard surfaces, and protect your studio tabletop from stains and solvents.
This brush holder is weighty enough that it won't slide around on the table. If you can avoid dropping it, you'll be using it for many years.
Are you a real brush monger? Get two or three of them!