Stainless steel pins, cylindrical in shape. This media is magnetic which makes it possible to pickup with a magnet. 5 lbs of media is all you need for 15 lb capacity thumler's tumbler. This stainless steel media is designed to work best for polishing brass, but will work with many other applications. Pins will pass through the flash holes and it cleans the primer pockets like new! Won't work-harden brass. Pins don't wear out so they will never need to be replaced. This media will work for ALL case sizes.
You need a hexagon style drum. Will NOT work in Vibratory Style systems.
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