This is just a re-upload of https://www.printables.com/model/31723-vw-california-t5t6-tarp-rails-hook by @Antoine_21086, fixing the STLs.
This thing makes it possible to fix a tarp (or another element such as a solar shower) on a Volkswagen California.
You will need: - The four printed parts - A 20mm M5 bolt with hexagon head - An M5 insert (I use the ruthex variant) - Some strong glue - A soldering iron
Glue together the hook and the sole on their respective flat face. Use a strong glue (I used "Pattex Extreme Repair"). Use the bolt to help you center both parts properly. Use clamps to maintain pressure.
Introduce the insert into the button using a soldering iron.
Assemble all the parts together.