NOTE: The switch is an On-Off set up. NOTE: NO Cap with Holes included. Can use either wet or dry media. Motor is connected to timer switch with automatic cut-off. Drum comes with perforated lid that separates liquid or dry media from cleaned cases. The RCBS Sidewinder gives brass a thorough cleaning, inside and out. It can comfortably clean up to 300 38 Special cases or 150 30-06 cases at a time with either wet or dry media. The quiet motor is connected to a timer switch for automatic shut-off. Each drum comes with an extra perforated lid that quickly separates liquid or dry cleaning media from cleaned cases. Tumbler comes with one drum (extra drums are available separately). Bowl Capacity: 300 38 Special or 150 30-06 Cases. I combine items to save on S&H.