Drag siege engine[]
"though the removal of the crushing roller (which is the defining definition of a siege engine) on the "drag" type makes it a steam tank (which is odd, because in WoW there is normally a bigger visual difference between the two)."
It still has a roller, the roller is just divided into three parts (space in between each section). You can still see that the roller passes under the beak.Baggins (talk) 05:54, 3 May 2009 (UTC)