I bought a used momo steering wheel on ebay and it came with this quick release. Well, half of a quick release. I need to figure out who makes it so I can get the other half.

 

do you have overhead pics to see the number of detent balls?

 

 

it looks like an old NRG one kinda.

The inside has the 6/4 bearing pattern, which looks like both the NRG and Rapfix. The color makes me think not NRG, though, as those seem to be more chromey. It does fit perfectly into the NRG stalk though.