Round circular closed hooks/eyelets on a square base

I needed a simple small circular hook on a square base. Such a simple object, so difficult to find! After some search on ebay, I decided it was so simple, I could design and print it. I am sharing here the second iteration of my (modest) design efforts, maybe this thing could be useful to someone, as it was for me?

The base is 20 x 20 x 2 mm. Hook wall diameter is 3mm. Of course, the hooks can be scaled as needed.

No need for supports or rafts. The print in the picture was at 0.15 mm layer