OM2ZZ Tool for centering pole in a circular holder

I needed to center my pole in a circular holder. They had different diameters. 

I created a tool for centering. In the files you will find a SCAD in which you can adjust the parameters as needed. The defaults are for a Decathlon 5m fishing pole and a Decathlon fishing rod holder.

Recomended material is PETG.
 

Rado OM2ZZ