You get so many squares for the price it's a real bargain. Knowing the low cost and having perspective, this is good value. While they are by no means perfect squares and are not perfectly right angles, they are close enough to align the panels for assembly. I noticed one pair had some imperfections either mold or mishandling and a dent in the plastic. A quick sanding with sandpaper is good. They are strong and powerful enough to level items without deviating. A word of caution as they are plastic try not to drop them on the concrete or you could dent the edges but this can easily be remedied with a light sanding.
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