I had some 6902 Ball Bearings so I decided to Remix the original PC Blend Pulley with a bearing. The Bearing snaps into the wheel. The two axle parts holds the inner part of the bearing. Bearing dimensions. 28x15x7.
The Pulley Body is the original one from Prusa
Screw needed is M4x30 + nut
I printed this one with Prusament Petg Jet Black
The author remixed this model.