Gold Testing Needle with Set of 3 Needles Size 333, 585 & 750

-3 pieces set of test needles: 333, 585 & 750. They are used with test stones and testing solutions to determine the contents of gold and other precious metals.

-This set of gold testing needles comes with 333, 585 & 750 tips, and is used to test the karat content of gold.

-Use testing acid and an acid testing stone with gold testing needles to achieve the most accurate results.

-Each needle measures 1.75” (4.4 cm) long, and they come on a brass ring.