Review on 🔩 Aluminum Accessories Brackets Connector by KOOTANS by Ryo Flora

I bought these to mount some 2020 extrusion frames but they were too small (holes too close together, heads blocking each other) to work with M5x10 Allen screws that I had from another project. These screws fit snugly in the included brackets, but they are smaller. I'm ordering lower profile pan head M5x8 screws and planning to use them without a washer. I was able to get the M5x10 to work without the washers, but it was very tight and the screw was against the profile.