Scalar Upgrade - Idler holder for GT2 16teeth, 3mm bore Aluminum Idler

Idler fork holder specially designed to Fit Scalar M and Scalar Xl 3D printers.

This upgrade requires a 16 teeth GT2, 2mm 3mm bore Idler.

* It better drives the belt.
* It already has 2 bearings included
* No need for plastic washers anymore.
* It's more robust and won't break compared to the plastic case for a standard bearing
* it's more expansive than the solution using a standard 625ZZ bearing and a plastic cage
* it reduces vibrations
* It increases belt lifespan
* It reduced