Multi-purpose coupler

Multi-purpose coupler.

Please checkout V2 of this design, it's ligter and has wider joint holes giving the 3D printer some error margain.

Let me know if you need minor modifications like the coupler inner diameter or bigger or smaller holes, I will do it for urgent and humanitarian requests.
Great for 10mm-14 mm tubes on the couplerside and holes are 2mm. It is designed to fit inside a 2Liters soda bottle (you can be creative and cut and use soda bottles for useful stuff).

Pics of the print