Curtain rod holder / Support tringle à rideaux

It was designed to hold a 20mm diameter rod.
Last summer, in a rented house, i broke 3 metal curtain rod holders... As I had my 3D printer with me, and as I was too lazy to move to find it in store, i designed one whith same size than the previous one, even if it is 3d-printed.

So here it is : I don't have any picture of it (it was a holidays rental), but i know none of them broke. I printed it in ABS, no support, something like 3 layers thick, 60% infill. It is really, really strong; i supp