Lyman Tumbler Media is the most effective choice for cleaning dirty and tarnished cases. A few hours in a Lyman Turbo Tumbler and cases are clean, polished, and ready for reloading. Lyman Tumbler Media is offered in Tufnut Untreated, Tufnut Plus, Natural Corncob, and Corncob Plus. Available in a variety of sizes from to 2lbs to 18lbs.