High quality materials: Whiskey stone ice cubes are made of 304 food grade stainless steel, they are cut, tumbled and polished to form smooth edges that won't damage your glass. .Easy to use: just put the ice cubes in the fridge for 2-4 hours, the gel in the ice will solidify, put 2-3 stone ice cubes in your favorite whiskey, the stones will cool slowly your drinks without diluting your whiskey, so you can retain the flavor of your favorite drink. .Easy to store: smooth whiskey stone ice cubes won't scratch your wine set, just wash by hand or dishwasher after use and keep their original look, then recycle them in a tray to keep stone ice clean and store while freezing. .Widely used: It can be used in any drink. Although these metallic whiskey stones are traditionally used for whiskey, they can also be used in other spirits, brandy, gin and even soft drinks. You can fully enjoy the original flavor and aroma of the drink. .Perfect Gift: Whiskey stone ice cubes are ideal gifts for wine lovers or banquet hosts. The stainless steel ice cubes are packed in gift boxes and can be given to your friends, husbands, fathers and even yourself anytimeWhiskey stone ice cubes can be used with family and friends at birthday parties, anniversaries, Valentine's Day, Christmas and other occasions. .