Brass Polish - 60 oz for Model B
Treated crushed Black Walnut Shell. Thumler's 500 series media attacks only the oxidation without scratching, bringing cartridge cases, fish lures, coins and other metal objects to a gleaming finish without loss of metal. Brass polishing media is reusable. When cleaning action slows use Reactivating Cream (Stk #501) to renew the strength of the media.