Good fit both into the car's 12V socket and into my W850i phone at the other end.
If I have a complaint, and I really am splitting hairs here, it would be I'd like to see a clearer indication of which way is up to avoid fumbling around trying to clip it into the bottom of the phone. An arrow or other symbol embossed into the upper side of the phone connector could have been done virtually for free if they had designed it that way.