Kobalt 40v Universal Head adapter

So I have a Kobalt 40v KST-130x-06 String Trimmer. I couldn't find a universal head that fit out of the box. So I designed and printed a part that makes (i think) any universal trimmer head fit. You will also need an M10-1.25 nut.
I have only used it to trim the yard 3 times. Works great so far, but who knows on durability? Good Luck!