Preup Whiskey Stones Reusable Stainless Steel Ice Cubes Chill Your Whiskey Fast Without Dilution (4) Made of Pure food grade 304 stainless steel, this material was widely used for its anti-oxidation and Non-toxic. The novel design of the stainless steel cube includes a bright color. Easy to get it out and use it in your home or in bar,can be put into any drink you want cool. It will keep the drink Original taste, not dilution the drink. The surface is very smooth so that can be washed easily.Have two packaging of this cubes, set of 4, set of 6. there is special packaging with it to keep it clean and beautiful. It is perfect at the moment when you have a cool and safe drink in the hot summer, then you have a good day!