Spacer

https://www.thingiverse.com/thing:3052488 presented a filament Roller guide. This used the common 608 bearing. I have some R6SSX51 bearings at hand so i made an alternative version.
Bearing R6SSX51
ID 9.525mm
OD 22.225mm
Width 5.556mm

Bearing 608
ID 8mm
OD 22mm
Width 7mm