Whipped these up after purchasing a Kobra 3 Combo. Wanting to tidy up multiple Bowden tubes.

These are a snug fit for 4mm OD Bowden tubing but will not affect the tubes ID. Once attached they will not slide along the tubing, but are easy to remove and reposition.

There are 4 combs of various sizes. The tube spacing on the largest comb align with the exits from Anycubic's ACE unit. Not sure how they would go with other multi-filament printer brands, but they hold generic 4mm OD PTFE (Bowden) tubing.