Fine Bourbon and Scotch deserve better than hazy homemade ice. Pour spirits straight over our frozen Glacier Rock® stainless steel cubes to keep liquor stone-cold sans dilution. Includes 4 Freezable Cubes And 1 Storage Pouch. Stainless Steel Construction. Keeps Drinks Colder and Less Diluted than Traditional Ice Cubes. For Best Results Freeze 4 Hours Before Use. - 2539 - 6 - B150-3/SR