Customizable clip written in openjsscad.
The Example you can download directly is for the "Intex Quadra Frame Pool" to hold the covering tarpaulin.
Parameter for this:
inner diameter: 58mm
Printed with PLA.
Customize: Just edit the parameters(bottom left), click "update" then "Generate STL" and "Download STL". BOOM ready to print.
Something wrong or missing?
Source Code @github.
File an issue.
Or even better create a pull request.