Prusa i3 Y LM8UU bushing.
M3 nut and bolt
Hole spacing : 20mm
Printed in PLA.
Update 27-09-2016 : Added 2 drawing in order to answer to dimensional questions.
Update 14-08-2017 : Added a taller version (32mm long)
In order to have enought strenght, do not print flat ; print it verticaly.
Slide the LM8uu in.
Mount it !