I recently got 4 DSE901 attys from electronic ash that are quite different from those pictured. They have a high, thin, pointed bridge....sticking out of a washer that covers eveything else! They are not original 901. (no markings) Does this indicate another factory doing knock-offs?
So far, they've been pretty decent. 2 have worked very well (great throat/vapor) 1 is decidedly wimpy (working on it

), and the other is still untried.
----a side rant-----

I've only been at this a few months, but my experience so far leads me to believe that ALL attys are flakey! (901's, 510's) It seems to be pure luck to get a good one, and another stroke to get one that lasts. Too bad. This stuff shouldn't be rocket science.