Fisher 11" DD Search Coil for F2 and F4 with Push In Connector OVERSIZE perfect for those that have

perfect for those that have hearing loss at certain frequencies

Analyzer Interface Module (CMA)

and then secure all with the arm cuff screw

an adapter allows for dual headphone jacks

Fisher 11" DD Search Coil for F2 and F4 with Push In Connector OVERSIZE perfect for those that haveFisher 11" DD Search Coil for F2 and F4 with Push In Connector This coil is designed for the standard Fisher F2 and F4 metal detectors with a "Push In" style connector. Ensure compatibility by checking your detector's serial number. Compatibility If your detector's serial number is earlier than 0610XXXXXX, this is the coil you need. For serial numbers after 0610XXXXXX, a "Screw On" style coil is required. Click here to view the "Screw On" connector