Lyman Case Cleaning Media is the most effective choice for cleaning dirty and tarnished cases. Tufnut plus is made from natural processed walnut shells combined with a polishing agent. A few hours in a Lyman Turbo Tumbler and cases are clean, polished to a high luster and ready for reloading. Type Cleaning Media Series Tufnut Media Weight 3 lbs Caliber universal Function Clean Cases Material Ground Walnut Shells Quantity 1 Media Type Walnut Hull/Polishing Agent