Wanhao Duplicator I3 Filament Tube holder

This thing holds the end of a 4mm O.D. 2mm I.D. filament tube on the top left corner of the frame using the existing two holes in the frame. There is a slit in the top that allows you to remove the tube and filament without having to pull the filament out first. Here is a link to a video showing me install and remove the tube with filament already installed.

https://youtu.be/kvME-4vNJ0M