Installing RO systems and needed some clips to have a bag of to hold down wires and ΒΌ tubing. Nothing I found had the fastner hidden and an easy way to remove the clipped wire/tube without removing the screw. After a few changes the tubing clips in and out and holds when static. Adjust your printer scaling for a tighter or looser fit.
Screw hole is 3.9mm for 1/8 diamter (~size 4 screw) Using caphead zipscrews for duct work worked fine for me.
The author marked this model as their own original creation.