And new to useing I baught my Ace 350 at a pawn shop and it has a 61/2X9 coil on it. So I asume they put this on because the adds say it comes with a 5X8 DD, wish it still had it, from what I have seen it does a better job finding targets in trashy areas. I also have a coinmaster pro and have noticed the Ace screen is not as easy to see as the is. I am looking forward to taking my Ace out for a test run. Well Happy Hunting Y'all