1 inch x 1 inch black anti-tarnish poly-tab made with Intercept technology that used by NASA, The Guggenheim Museum and jewelry manufacturers worldwide Anti-tarnish tabs offer clean, non-abrasive, non-toxic, environmentally friendly tarnish and corrosion prevention for finished jewelry and jewelry components that are made with all types of metals such as; gold, silver, brass, aluminum, plated metal Protection will last up to 12 months, safe for your jewelry How to Use: place clean dry jewelry in an airtight bag or pouch along with 1 inch strip (covers up to 30 cubic inches container space) anti-tarnish tabs are packaged into Adabele's trademarked bag Colour:black Material:Polyamide Package Contents: 100 * Anti Tarnish Strip Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.