Review on ⚙️ Enhanced 20X20X17mm Aluminum Extrusion Corner Bracket: Superior Strength and Accuracy for Precise Assembly by Victor Olsen

These brackets seem to do the trick, they were pretty rough cast and don't feel like aluminum to me. Based on how soft they are and the texture I think they are zinc rather than aluminum. I have to sand the burrs on one side and they came off very easily with a dremel and didn't even bother enough to heat up the clamp. I have some from other manufacturers and the effort of grinding down those lugs heated them up so much it was difficult to keep the strut in place. They measured 19.7 x 19.7 x 16.8 for me and required a firmware clean. I was expecting this though as they have to eliminate something in production to be able to sell them for less money than others. I will most likely buy them again if I have to without assuming I won't take a break.