Bearing ball for 50mm pvc pipe with hole for ceil mount

Hi guys!

I designed this bearing made with 6mm airsoft balls, and a hole for ceiling mount.

I used two parts like this, filled with 6mm airsoft ball to make a bearing. This to part allow a PVC pipe to rolls and unrolls a projector screen, it is a simple idea but functional.

The PVC pipe has a outer diameter of 50mm.

This part have a inner diameter of 50.4mm, and a outer one of 59.999.

I hope you enjoy it.