PC Water Cooling Mock-up Tubing

I did my first custom water cooled PC recently and I had the idea to print dummy tubing to test out how I would do the runs. The dummy tubing pieces are of known length which really helps when setting up your bends for the real tubing. This is also really helpful for mini-ITX builds as clearance can always be a concern. Print these out and test out what you want to do before wasting tubing!

These are snap together pieces and I have 12mm, 14mm, and 16mm diameters. There are various lengths along with 45, 90, and 180 bends. The OD of the tubing is under sized so that it slides in and out of fittings more easily without damaging the sealing O-rings. 

I am planning to make a set that bolt together instead of snap for easier printing. I just haven't gotten around to it yet.