13"@3f (3 khz and 7 khz and 14 khz)
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Classified
New 13" / 3 frequency (3,7,14 kHz) DD search coil Universal multi frequency 13" search coil for all AKA metal detectors
New/never used universal multi frequency 13" search coil for all single frequency AKA metal detectors. Three frequencies 3, 7, 14 kHz