Stainless Steel Media (2 lbs) by FRANKFORD ARSENAL The Frankford Arsenal Stainless Steel Tumbling Media is the ideal media for rotary tumbling brass. Constructed of high quality 304 stainless steel and it is durable and easy to handle when used with the Steel Media Transfer Magnet (not included). Cleanup after use has never been easier. Specifications and Features:Life Time UseIdeal for rotary tumblingMagnetic for easy handlingHigh Quality 304 Stainless SteelPerfect amount to use with the Rotary Tumbler LitePins scrub inside case body as well as inside primer pockets1mm x 7mm pin size *Suggested use with the Frankford Arsenal Platinum Series Rotary Tumbler Lite.