Lyman Stainless Steel Tumbling Media - (5 lb)Rotary case tumbling provides a real advantage over other methods of case cleaning as the stainless steel media pins are able to get into areas that other media such as corn cob or nut shell simply cannot reach. Areas such as primer pockets and the inside of cases are both cleaned using rotary tumblers, while vibratory tumbling just cant get into these areas effectively. A good quality stainless steel media, made to the correct length and diameters is