Ultimate Value: Our combination of Anti-Tarnish Bags & Tabs provides the most holistic combination of anti tarnish protection for your jewelry items. , All Around Protection: Includes 50 tabs (. Each tab provides effective tarnish & corrosion prevention for the following materials. Gold, Silver, Copper, Bronze, Tin, Brass, Magnesium, and Ferrous Metals (Iron & Steel) , Envelopes: Each 10cm x 10cm bag is perfectly sized for earrings, pendants, rings, and foldable necklaces.