Extra Fine Grit 30/60 Blast Media - 25 LBS Bag;Low free silica less than 0.1% compared to sand at up to 99% free silica;Extra Fine cleans surfaces & create a smooth finish, brush off blast, in a high pressure water blast;Fast Cutting, Uniform density, Consistent gradation, A 100% recycled, ??reen??product;Harsco?? BLACK BEAUTY? blasting abrasive has been number one in the industry for nearly 80 years.
