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Amazon.com : Mars Discovery 13” DD Waterproof Search Coil for Fisher F2 and F4 Metal Detector : Patio, Lawn & Garden
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Mars Sniper 10inch x 6inch DD Waterproof Search Coil for Fisher F2 and F4 Metal Detector - Walmart.com
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CORS Fortune 9.5 inch x 5.5 inch DD Search Coil for Fisher F2 and F4 Metal Detector with Cover - Walmart.com
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