What are cvd's?

[got__nitro?]

I have a pretty good idea that this is what they are:
https://www.rcnitrotalk.com/gallery/showphoto.php?photo=3300&papass=&sort=1&thecat=500

 

[TINY_MAXX]

That picture is actually of an output yoke for the driveshafts.A CVD stands for constant velocity driveshafts.There mainly a solid drive shaft usually made of metal.

Those are CVD's

 

[got__nitro?]

Ok I think I have shiny ones