These hooks are off a Flexicon resistance band machine. I’m trying to find something similar for a DIY project, but I can’t find the right name for the part or anything close to it. The key feature is the wide, flat rectangular area on top, about 4 inches across, so the largest resistance bands can sit flat without bunching up. It also has an opening/loop where the band can slip in, and it mounts to a metal plate with screws or bolts. I’m not looking for a normal D-ring, eye bolt, carabiner, or small pad eye.