Glacier Rocks Large Stainless Steel Cubes by Viski On the rocks shouldnt mean watered down. Freeze our extra-large stainless steel liquor cubes, then pour your libation of choice directly over them. Suddenly, neat drinks are even cooler. Includes 2 Freezable Cubes and 1 Storage Pouch Stainless Steel Construction Freeze 4 Hours Before Use Keeps Drinks Colder and Less Diluted That Traditional Ice Cubes