I used a smaller version of these right angles and they are great for positioning parts during assembly. I'm not happy with those big right angles. Starting with cosmetics, they end up with a rough finish compared to the smooth hard anodizing on the smaller version - the result is that dried wood glue is difficult to remove. The finish is not hard anodized so these corners are easy to score. Moving on, both inside legs have high points (0.001β0.003) in the area just in front of the inside corner relief. I had no problems with the smaller version.