Stainless Steel Shot: Unlike carbon steel, this media needs no rust protection. Heavier in weight and corrosion resistant. S.S Mixed shots are the ideal choice for burnish metal to a mirror bright finish. This media must be cleansed in water, then dried and stored. A combination of balls, ball cones, pins and diagonals for maximum coverage on a wide variety of pieces. Used in Vibratory or Rotary tumblers only. 1lb per package. Made in Japan