Summary

Cable guide to keep the cables and the bowden tube together on the Ender 3.

I printed this in PLA, which works fine once it is installed. You can install it by twisting it around the cable and bowden tube. This is a bit finicky, unfortunately I snapped the end during installation. The model fits diagonally on the print bed of the Ender 3.

Update 2021/04/05:
As mentioned by maddmaxx308 in the comments; heating the model on your print bed before installing makes it more forgiving to install.

Print settings:

• max 0.2 mm resolution. I printed in 0.12 mm resolution
• 100% infill
• No support
• Material: PLA