The plastic clips holding the headrail cover on our vertical blinds had broken due to age and uv exposure. The closest I could find gripped the cover at the top and the bottom instead of sliding in like the old one did. This is a close replacement I modeled up. I printed a prototype in PLA and it was a bit too stiff to connect, so I reprinted in PETG to add a bit of flex. Works well enough to keep our deposit at our apartment.