Filament Spool holder/insert

‼Disclaimer‼
I did not steal this design, it is my own designed model, I am aware there other models similar to this. This is not a “Stolen Thing”
⚠I am the owner of this specific designed model.⚠

Model Details
Designed to assist the Ender 3 Model printers Spool holders, allowing the Spool to rotate more smoothly the greatly reduce spool wobble while printing. I’ve personally used this and it’s helped reduce spool wobble immensely. Also, threads are all the same, meaning you can mix and match to get the perfect fit.

Dimensions: (center shaft in between chamfers)
Inner diameter: 37mm
Outer diameter: 42mm

Not sure if the 37mm ID will work for all model of printers spool holders, as I designed this around my two Ender model printers stock spool holder.

UPDATE
I have added two more sizes, I’ve added the 40mm model along with a 23mm model when fully screwed together, to best fit more sizes of spool thicknesses.
My overture center hole is approximately 50mm wide where my Creality Spools have a center hole thickness of 42mm. Having the 3 different sizes helps best fit different spools.