These 2-mil anti-tarnish reclosable bags with the exclusive Silver-Guard film that neutralizes the corrosive gases that attack silver, platinum, gold and other metals even when the bag is opened multiple times. These 4 in. x 4 in. 2 mil Minigrip plastic resealable jewelry bags keep your precious metals looking like new without the hassle of tabs or strips! Anti-tarnish tabs and strips must be replaced every six months to prevent tarnish, but the Mini Grip Silver Guard resealable poly bags last 2+ years. These 4 x 4 .002 mil MiniGrip Silver-Guard bags keep metals at their sparkling best. Ideal for Jewelry and Jewelers for use as resealable jewelry bags.