Outer Limits 4x4 Board

Just wondering if some one can give me a measurement of the diameter of an MQ axle tube where it passes into the steering knuckle?
also an idea of how think the axle tube material is?

thanks

At that point there is more than just the tube. The inside has cones (for lack of a better description) in either side, going some distance in to the tube. Will see if i can find a pic...

Now I'm curious, what are you up to?