Prolong case and die life and make resizing easier by cleaning and lubricating the interior of bottleneck cases and cartridges. After cleaning with brushes, dip the case mouths into dry lube to reduce friction from sizing die expander button. Includes 3 brushes and dry lube for cleaning all cases from .17 to .45 caliber. Prevent gunpowder contamination with the Lyman Case Neck Dipper. Order today!