About this 3D model

A small print in place bearing with 10mm ID and 40mm OD. Included optional 2 part bearing cage that snap-fits together through the holes in the individual bearing rollers to make sure the rollers don't clump up. Has a fair bit of runout but if preloaded with a spring is likely usable for low precision applications. Holds up relatively well to high RPM and spins very smoothly. Works well as a fidget toy on it's own too!