Universal Spool Holder

I designed this spool holder after looking around and trying a bunch of them and never getting exactly what I wanted. This is a truly universal spool holder, It will hold spool with a 30mm hole in the spool all the way up to 80mm. I kept the holder short to help with print time. Another thing I never liked about the spool holders I was finding is that they all only used one bearing in each cone and they never spin very well, each one of the cones in my design use two 608zz bearings and the spool