Premium Gold Test Stone-Made in the USA 3" x 1-5/8" x 1/4" Kagan Tabs snap securely around a

Tabs snap securely around a groove on the matching 2-notched ear post

Compatible with Bergeon tool Part # 801596819

Quatro i-Series CB2 benchtop dust collector unit

5 mm Link Length 6 mm Link Inner Dimensions 4

Premium Gold Test Stone-Made in the USA 3" x 1-5/8" x 1/4" Kagan Tabs snap securely around aA professional grade gold testing stone made in the USA from natural Arkansas black novaculite, quarried and cut domestically. Used by jewelers and metalsmiths to test precious metals, this stonealso known as a streak stone or touchstoneprovides a reliable surface for acid based karat testing. Beware of cheap imitations made of glass, which stain and degrade quickly under repeated use. To test a metal item, rub or scratch it across the stone's