Acid Testing Needles 4Pcs

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4 New Acid Test Needles This is a new set of 4 testing needles These needles test 10K, 14K, 18K gold and silver They are used to determine karat content of gold and silver The need les and the item to be tested are rubbed on a test stone and treated with acid to determine a match Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design. Show more