The Frankford Arsenal Platinum Series Rotary Tumbler delivers a new level of brass cleaning performance. The small stainless pins easily penetrate inside cases and into primer pockets to deliver unbeatable cleaning power. The large volume drum holds up to 1000 pieces of. 223 brass and has a molded in rubber lining to protect brass and dampen noise during operation. A built in timer in the base can be set to run from 0 to 3 hours, shutting off automatically. The drum features clear end caps to allow visibility to the brass while tumbling. A set of sifting end caps is also included to assist in separating the stainless media once tumbling is complete. The tumbler can effectively clean without the use of stainless media pins with a mixture of Frankford Brass Cleaning Solution and water (use of media pins ensures primer pockets and inside of cases are perfectly clean). Five pounds of 304 stainless media pins and a sample packet of Frankford Brass Cleaning Solution are included. I combine items to save on S&H.