This is a highway grade salt that is a mixture of sizes from 3/8” and smaller. Used mainly for de-icing of driveways, roadways, bridges, parking lots, and other key areas it is a premium salt that is highly effective for bulk users. It is a low cost, highly efficient product with the ability to lower the freezing point of water and melt ice rapidly. It meets or exceeds ASTM specifications for both particle size grading and purity.