This is a single piece no-support tape roll holder sized to hold two packing tape sized rolls (including with one, or both, in dispensers).
It should print just fine laying on the clear bottom of the print, but depending on your settings and desire for perfect bottom-side finish you may want to put support at the very top of the holder's arch. I skipped that and it printed fine, however.
The author remixed this model.
Used original fastener to create original model.