If you use stainless steel pin media, then you need The Frankford Arsenal Lite Rotary Tumbler. It takes your pins into a liquid bath that cleans better than ever by penetrating inside cases and into primer pockets. On the drum, there are clear end caps that allow you to see the brass while it's tumbling and then watch as the sifting caps separate the media when the tumbling is finished. Runs using a maintenance-free, direct-drive electric motor.