The 11" x 7" coil's semi-elliptical shape covers ground efficiently while rejecting adjacent trash signals that would overwhelm a round mono coil

and iron masking stops hiding them behind adjacent nails

The Fisher Gold Bug metal detector runs at 19 kHz

Audio Output: Built-in loudspeaker

For best results keep the composite tips sharp at all times

Minelab Black Padded Carry Bag with Finds Pouch Bundle ground-balance The 11" x 7" coil'sThis Minelab Black Padded Carry Bag handles the biggest metal detectors on the market, including the GPZ 7000 and most other detectors even with larger aftermarket coils attached. The 54 inch length gives you plenty of room for full size rods without disassembly. Key Features Accommodates large detectors like the GPZ 7000 with coils attached no disassembly required Generous 54 inch length fits most metal detectors fully extended Padded protection