Nuggetfinder is another Australian manufacturer of aftermarket coils to suit the Minelab and Whites series of metal detectors. Gold prospectors have used these coils for many years, so check them out. The range for the SD/GP/GPX units is the Evolution series of spiral wound coils, and there is a DD spiral wound large coil as well. The GPZ7000 aftermarket coils are in the process of being released.
