Frankford Arsenal Stainless Steel Media Pins are ideal for rotary tumbling brass. When combined with a liquid bath they deliver unmatched cleaning performance. Constructed of high quality 304 stainless steel, the media pins effectively penetrate inside of cases and primer pockets and are magnetic for easy cleanup afterwards. The Frankford Arsenal Media Transfer Magnet is ideal for handling stainless media pins. It effectively gathers and releases pins with a pull of the handle which makes separating pins from the brass fast and convenient.