Specification:Material: Food grade 304 stainless steelSize: 27 * 27 * 27MMWeight: 30g / pcColor: stainless steelProducts include:4 x ice tartareHigher quality: 304 stainless steel won't scratch your glasses and ensures pure, pure enjoyment of your favorite drink. that the composition, smell or taste of your drinks are not impaired in any wayNatural taste of your drink: Ice tartare can be cooled and dispensed gradually into the drink without diluting it. You can enjoy a variety of cold beverages without mixing with natural flavors.Ideal as a gift: whiskey stones in a practical set of 4 are the must-have accessories for every whiskey lover and friends of chilled drinks, ideal as a stylish birthday present or as a party favorsEasy to use: simply wash off the whiskey stones, put them in the freezer for 2-4 hours, put 3 stones in each glass and your drink will be perfectly cooled - but not ice cold. for best results, we recommend filling the glass to the level of the whiskey stones