All connectors and adapters are printed using PLA PRO tough plastic.
These connectors are very useful as they allow all of our products to connect and be compatible with each other. For the DIYer these are a great customization tool.
You can build very simple ideas or as complicated as you want, for example, combine an out world with a conical adapter and a test tube, add a grout insert, and you get a very good starting set-up at a very decent price... or make a test tube array using Ts, adding one at a time slowly until the size of the colony justifies a bigger formicarium, you get the idea, etc. Being able to have connectivity between test tubes and different vinyl tubing is one of the easiest ways to slowly expand your colonies.
L, T and X connectors shape and expand the direction you want to go.
We offer silicone tubing in our "Cone Adapter and Silicone Tubing" product page, we like to use 1.5 cm lengths to create test tube water towers in combination with a "T" connectors, see photos for examples, this is why we offer "T" connectors with 14, 15 or 18 mm diameter on the side for silicone tubing that fits the inside diameter of test tubes, silicone tubing is very soft and grips tightly onto the inside walls.
*** If you are planning on using "T" adapters with a test tube you will need "silicone tubing".
14 mm silicone tubing flushes securely into our 15 mm O.D. test tubes (not tight on 16 mm tubes).
15 mm silicone tubing flushes securely into our 16 mm O.D. test tubes.
18 mm silicone tubing flushes securely into our 18 mm O.D. test tubes.
Example, "T - 9.5 thru / 14 side" This means the two opposite openings on the T are 9.5 mm (straight through line), and the side opening is 14 mm.
Dimension KEY for standard tubing outside diameters:
9.5 mm = 3/8 inch
12.7 mm = 1/2 inch
14.3 mm = 9/16 inch
15.9 mm = 5/8 inch