Pushrod tube

I have an idea I would like to try with the push rods, thats why I am asking for the dimensions, the wall thickness of the aluminium tube.

I may need to buy one so I can cut it up to determine this dimension, I would rather not do that.  I'm hoping someone will have a damaged rod that can be measured.

Anyone?

Thanks for that information Andy.  I did suspect that they might be solid rather than tube when I weighed them, 18 -19g each.

I am making a set of push rods in the the hope I can improve on the standard ones.  I'll share when the jobs done.