The IOSSO Products Case Cleaner restores brass casings to a bright finish in seconds shortening your reloading prep time. This liquid cleaner removes powder fouling residue, oxidation, tarnish, discoloration, dirt, and grime. IOSSO Products Case Cleaner cleans the inside of the casings and the primer pocket where tumbling media is not effective. Just immerse the casings in the solution for from 20 seconds up to five minutes, rinse, and dry. The Case Cleaner solution is reusable and economical.