Review on Bracket Connector Aluminum Extrusion Profile by Lild Zimmerly

I work with 4040 or 20 40 and even 2020. But it's not for German stamped aluminum keys. It's random for some, I don't know what they are for but they don't match any of the styles I've tried them on. I had several different T-slot aluminum profiles that were 20/20, none of these profiles worked with that angle. So I would recommend it, hell no. I tried again with different brands of extruded T-slot aluminum and they didn't match.