Three way elbow ... thingy

Wanted to build an enclosure for my Ender3 using 6mm dowel and clear plastic. I knew I needed someway to join 3 pieces of dowel in eight different places on the enclosure but i had no idea what it would be called. So, in order to avoid embarrassment at Bunnings (Australia's biggest hardware chain), I decided to design my own. Suitable for 6mm dowel.