Enzo window knob

My friend's Enzo was suffering from damaged window knob.
The part costs about 1k$ and didn't fancy him so much.
I draw, machined and anodized black a pair for him, on the left the broken oem one I cut to understand: the ballbearing was broken. I swapped the ballbearing for a shouldered bronze ring in the new designed ones:

 

Yes I think, my friend was complaining with its loose knobs, he tried to tighten it and broke its axle.
My main job is machining special toolings for various industies.
I did open it delicately and found a broken little ballbearing, so I tried to build something efficient and not too ugly, the oem ones aren't very nice.
We just mounted them, time will tell us if they work fine.