MEC Brass Prep Tumbling Media 1 Multi-Caliber
https://www.tandktactical.com/shop/098489039536-mec-brass-prep-tumbling-media-1-multi-caliber-4280
https://www.tandktactical.com/web/image/product.template/4280/image_1920?unique=49e37d3
MEC's Brass Prep Corn Media is a 14/20 grit for cleaning brass with your vibratory tumbler.
