Our mixed stainless steel shot includes balls, diagonals, and pins made of Grade 304 stainless steel which has slight magnetism. Perfect for reaching every little crevice in your metal, bringing out the highest shine. Make certian that your items do not have any scratches or scuffs that are significant. Tumbling will cause those scratches to be enhanced by the shot, not to be used in place of sanding. This media requires only occasional cleaning and is perfect specifically for applications where good rust and corrosion resistance is important. Net weight 2 lb (0.91 KG).