I HAVE A FISHER CZ SUNRAY 12" COIL(PROTOTYPE)IT CAME WITH MY CZ-3D, THE PERSON THAT SOLD ME THE DETECTOR SAID HIS FRIEND TRIES OUT NEW COILS FOR SUNRAY AND HE GAVE HIS FRIEND A GOOD DEAL ON IT, THE THE BOLT HOLES ARE LARGER AND THE LOWER ROD FITS LOOSELY ALSO FITS LOOSELY WERE IT GOES INTO THE COIL SO I HAVE A WASHER ON THE INSIDE AND YOU CAN TIGHTEN THE COIL GREAT AND ITS FINE. $100 SHIPPED IN U.S.