T-mount adaptor for EOS

In order for me to take photos with my EOS, I need a T-Mount adaptor and
lens tube. I have both for my older non Eos camera but what I was wanting
to know, is the screw mounting on the newer EOS T_Mount universal (ie can I
use the old lens tube on the new t-mount or will I have to buy a new lens
tube?)

Thanks

Bunyip