Summary

Hi, this is a cd hub which can be printed to make tops and rolling things. 2 parts are needed per top along with an unwanted cd, 3/16" allthread, 5x19mm washers and 3/16" wing nuts. Video of the parts in action is here https://www.youtube.com/watch?v=ry6EXG6SeZ8 . Have Fun, Regards Steve Nurse