Delta spool holder (new version)

My "ultimate" spool holder for Delta printers, it is basically like this https://www.thingiverse.com/thing:2748689 but have improvements for better use.

The rod it´s thicker, 17mm, the walls to lean it on the structure are 1mm thicker nad now it does not scratch if use screws M4x10, there are two kind of nut for hold the spool, the "basic" for spool that have inner diameter under 65mm and other finest for spool until 120mm of inner diameter.

I used ISO 15 1817 bearings, 17mm inner diameter