A simple holder that can hold 3 nozzle cleaning needle tubes, that can be mounted on Honeycomb Storage Wall with a m3 hex connector.
The tube is about 12.4mm at its widest, and the hole is just big enough to hold that.
Best to stand the tube holder by it's opening, you might want a bit support as there are some bridging at the top of the window.
The author marked this model as their own original creation.