Premium Gold Test Stone-Made in the USA 3" x 1-5/8" x 1/4" Kagan 85mm Plunger W/Spring is a

85mm Plunger W/Spring is a precision replacement plunger designed for use with Bergeon watch bracelet sizing tools

making it easy to secure to a workbench or tabletop for stable

Part # Metal Stone Size 20-60 14K Yellow

Quatro i-Series CB2 benchtop dust collector unit

Premium Gold Test Stone-Made in the USA 3" x 1-5/8" x 1/4" Kagan 85mm Plunger W/Spring is 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