Product review (4 stars): Worked Okay
I had no issues threading the vent.  Need to make sure put your hand inside the plastic as the instructions show and guide the wire end into the threads then make sure you are turning it the correct direction and it will thread just fine.  It was a bit of a pain to do but did work once I figured the thing out.  The end fit just fine on the dryer however wasn't really big enough to fit the connector in the wall so still had to tape it.  Our issue was the dryer needed to be to the right of the opening into the wall which also happens to be just above the floor behind the washer.  This worked but has a tight bend.