Ziptie edge clip pack of 10. Slide zip tie through the slot on the clip, and slide the toothed clip onto the edge of frame you want to attach to. Zip tie then can be used to tie together cables, etc. Two different orientations.
These are made for 2mm thick metal frames - perfect for solar module cable ties. Clip on outside or inside of frame. Teeth hold clip in position, but can still be removed if you pull hard enough.