Prusa Mk2 / MK2.5 Adjustable Y idler

This is a remix of Jooxoe3i's Y-idler
(https://www.thingiverse.com/thing:461824)

I've adjusted the idler tensioner to fit on the original Prusa i3 MK2/MK2S/MK2.5

Print two sides, the spacer, and the pusher.

You will need:
1x M3 nut
2x M3 lock nuts
1x 18 or 20mm M3 Screw for the pusher
1x 30mm screw for the pulley

The standard Prusa pulley should fit on this idler.
I used a toothed GT2 pulley to reduce wear on the belt.
Pulley (20 Teeth) - 12.2mm Diameter, 18mm Flange- 3mm in