Medium Grit 12/40 Blast Media - 10 LBS Bag;Low free silica less than 0.1% compared to sand at up to 99% free silica;General purpose repair and maintenance blasting for the removal of paint and rust, structural steel;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.
