md-4030 metal detector Ground Balance mod
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24:42
This $479 Metal Detector PAID for ITSELF in ONE DAY!
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14:17
Металлоискатель Пират своими руками К157УД2, TL072
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13:11
Can chinese metal detector MD4030 find anything good ?Amaizing finds!
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18:34
МД 4030, настоящий и нет, резистор.
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5:36
Металлоискатель GTX 5030 ремонт катушки Резистор
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26:15
how to use a metal detector
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19:33
Quest AIR Metalldetektor - Einstellmöglichkeiten und Funktionen
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12:47