Lack Lift-Off Bracket

I printed Latzenpratz's great lack enclosure raisers to stack two tables for storage. I don't plan on adding panels for an enclosure for a while so I wanted something easily removable since I am still new to 3D printing and tinkering with the printer a lot.

I guess the original design of the screw locations are fine as no one seems to complain about it, but I wasn't 100% satisfied screwing the raisers into the hollow part of the table. These connectors move the screws to the particleboard t