Mounting bracket for Shelves for Storage

Mounting bracket for an additional shelf for workshop shelving unit.
Two-piece support for additional shelf.
It is necessary to drill two 5mm holes for M8 screws on each of the posts.
Required additional components:
8x M8 screws (15.5mm);
8x M8 nuts.

3D printing settings

Print at 0.2 to 0.3;
For better durability, set the print to 3 or 4 walls.
Infill: 10%~15%.