Rostock Jaw for Carbon Arrow

I was printing out the parts for a Rostock Mini and decided after I printed the Jaws that came stock that I wanted to make some that would fit carbon arrow shafts. I'm an archer, so I have a bunch of broken ones laying around...

So I whipped this up. It should still fit the u joint pieces as well as the other pieces they are supposed to connect to. I haven't tried assembly yet, but I know if fits on my arrows very well.