Lyman Tufnut Granules Untreated White 12lbs

Lyman 7631337 Large Tufnut Untreated media, or untreated crushed walnut shell, in a 12-pound (approximately 5.44 kg) package.
Here are the technical details:
Material: Natural Walnut Shell. It is a more aggressive material than corn cob, ideal for removing heavy oxidation and stubborn dirt from cases.
Condition: Untreated. It does not contain chemical additives or pre-applied polishes.
Advantage: Being "natural," it leaves no oily residue and allows you to decide whether to add a specific polish or use it only for rough mechanical cleaning.
Use: Pour into a vibratory tumbler or rotary tumbler for cleaning cases before reloading operations.