Swecatch Stainless Steel Diamond Ice Cubes Set of 8 Diamond Chillers - Wine Chillers -Whiskey Chillers - And Spirits Chillers (8) Food-grade stainless steel liquid-filled cubes are a non-diluting alternative to ice cubes. Made from 304 stainless steel, durable, easy to wash and clean. Unique gift for spirit drinkers; best chilling ice cubes for whiskey in the market. Securing a secret non-toxic gel; extend the chilling! Great for whiskey, wine, vodka, liqueurs, coffee, juice, soft drinks and more.