That would be the Hunter 12x8.5 all frequency coil he got from me. I used it all of maybe 15 minutes in my yard to try it, and it seemed to work really well. But I upgraded to the CTX soon after so didn't really have need for it. I also have the NEL 15" all frequency and I'll tell you that it really runs DEEP! In my opinion, you can't go wrong with a NEL coil!