Its the actual drive shaft. On the right it just comes out of the tranny and goes straight to the wheel hub. On the left side coming out of the tranny theres about 2 inches of a shaft showing, then it goes into to big square casings which I assume is the atts unit cause no other Honda Ive worked on has had it. Then after the ATTS unit theres about a 2 foot peice going to the left wheel hub. We cant get it out of where it meets the ATTS unit.