Suitable for plant racks with rods up to 5mm in diameter . I used a 3.5mm screw to screw it to the wall. If your screw is too long, you can print a spacer (that is the same length as the length your screw is too long) to place between the screw-head and the gap of the holder.
I made this, because my old ones are broken.
material:
I think PETG is better, because it may be more wear-resistant than PLA.
supports:
Yes
The author hasn't provided the model origin yet.