Another Ball Bearing

Yes, it is another ball bearing. I was a little bit bored and this is the result...

The ball bearing uses 6mm softair ammo and is designed to snap together. No glue necessary. It has an inner diameter of 10mm and 28 on the outside.
The print will take 15...20 min.

I made a video to show the assembly: http://youtu.be/uXTspufYuXM

EDIT:
I uploaded two new inner parts with an diameter of 8mm.

Instructions

• Print the parts (rotate inner2.stl by 180°) - I recommend a layer height of 0.1mm
• load the balls
• snap-on the inner part
• keep on rolling