90 Degree Brackets for 1 x 1 inch T slotted Frame Extrusion with Half/Full Side Guard

There are four stl files including brackets of 1 x 1 inch with full/half side guard and 2 x 2 inch with full/half side guard. All of them fit 1 x 1 inch T-slot frame extrusions.

3D Printer settings:
20% infill with 2 shells seems strong enough.

** Migrating all my previously posted files to this account now, my apology if you have seen these models before.