This bracket is designed to mount on a wall and store spools of filament. I typically print the bracket in the same color of the filament that is being stored so that the spools stay organized and are always in the same location.

I mount mine with standard drywall screws. In this case, I used #6 1-1/4 inch screws. The part is specifically created to counter-sink a standard drywall screw. For reference, this is the exact screws I used: https://www.homedepot.com/p/Grip-Rite-6-x-1-1-4-in-Philips-Bugle-Head-Coarse-Thread-Sharp-Point-Drywall-Screws-1-lb-Pack-114CDWS1/100152392

I placed the flat back of the part on the build platform as seen in the last picture screen-captured in Cura.