Drybox PVC tube holder

I was looking to hang spools in a self made drybox, and could not find something where I could "pop" the tube to add / change a spool.
So I did what anyone would do: I designed one.

It's very simple, and the STL is designed to accept a 40mm tube.
2 holes are there to fix the holder by screws if you want. It could be glued with a hot glue gun too.

[The PVC holder](https://cad.onshape.com/documents/769c31473a91e25f10460bb5/w/d059928aeb66fc2c2fc68fd3/e/c75a65d01a7f29bbf61a62e3) was designed