I needed a minimalistic cable clip for my 5.5mm cable.

I've attached the clips with small nails, but you can also use screws and just use the hole as a guide or add negative cylinders in the slicer to widen the hole.

The print profile contains all sizes (5.5, 6, 7, 8mm) from left to right, also named in the object tree.

The print is pretty fast so if you just want to make a fit test, print them all and then replicate the one that fits best.

If you need bigger version, you can of course just upscale one of the base versions.