This is a much better roller shaft for the laser engraver. The kit provided little more than a heavy duty straw. Which, even when tighten was loose.
These pictures are of the laser head, but I also installed them on the Y rails.
It's designed for the widely available EleksLaser A3 Pro laser engraver kits (mid 2017), from online retailers; Banggood, GearBest, EleksMaker and eBay.
I need to fire my maid, so much dust and fibers. :)
Because it's so small I chose a heavy infill and 3 wall sides. This one is printed from PLA, but any ridged filament will do.