Hagerty Silver Protection Strips were developed to neutralize tarnish-causing sulfur gases inside enclosed storage or display areas_keeping polished silver shining and ready for immediate use for up to six full months. Ideal for instrument cases. Packageof ten 2 by 7-inch tarnish prevention strips to put in case of any instrument with silver or silver plate. Helps keep keywork bright and reduces the need to polish. Especially helpful for flutes and trumpets being put into storage.