Hello, everyone.
Just made a spool shaft with bearing, because in my case TPU spool had a lot of friction on the original shaft.
Made version 2, with more slots for bearings and separator for smaller spools.
Numbers in the names is a length (75 and 102 cm), just choose one of the model (mostly 75 spools with support), same length stick, put 3 or 4 bearings (608 7*22mm) and screw it to upper holder.