Gold Test Needles-Set Of Three-10K-14K-18K Ultrasonics It is not sold or

It is not sold or shipped outside these regions

poorly made copies available elsewhere on the market

Compatible with Foredom Carbide Tip (HP10212)

One punch holding handle with set screw for secure punch retention

The three rotating bur holders attach to the main support tube and can be positioned at any point along it

Gold Test Needles-Set Of Three-10K-14K-18K Ultrasonics It is not sold orGold test needles are an essential tool for jewelers performing acid based karat testing. This set of three needles covers the most commonly encountered gold karats in jewelry: 10K, 14K, and 18K. Use these needles as reference standards when comparing acid reactions on a test stone to determine the karat of an unknown gold item. To use, select the appropriate karat needle and rub or scratch it against a test stone. Make a second rubbing or scratch