Excal 1000, Excal II, Sovereign GT, CZ-20, Tiger Shark, Tejon, GTI 1500, Surfmaster Pulse, CZ6a, DFX, AT PRO, Fisher 1235, Surf PI Pro, 1280-X, many more because I enjoy learning them. New Garrett Ca
I had one that I used on the cx-111 but you could also use it on the cx-11 master hunters and i believe that you could also use it on some of the older garrett units. Now if you are asking about the eagle eye 2 box, you can only use that one on the GTI 2500 or 2000. They work ok but a dedicated 2 box would be better for deep caches. Could not get mine to operate very well in high mineral ground. Hope this helps. HH. Al