Ant test tube to tube connector

thingiverse

This part connects two test tubes to transport ants from one tube to another with ease. If you need an alternate diameter, just let me know and I'll make the necessary adjustments for you. If desired, a hole for air can be added by heating up a needle and carefully pushing it through the middle section of the part. This feature is not included in the 15.5mm version due to its thin walls.