608 ballbearing (22mm external diameter and 8mm internal diameter)
Print in place with supports for the balls.
2 versions :
608 Ballbearing with higher tolerances. A bit of play on the final result but usually turns more freely
608 Ballbearing 9BBS, with less play but can sometimes be a little rough when turning (well calibrated printer needed, i still manage to get it going with my well tuned ender 3)
The author marked this model as their own original creation.