Stainless Steel Whiskey Stone, iRainy Chilling Rocks Reusable Ice Cubes for Cooling Wine Drinks Beverage (4 PCS Whiskey Stones) Chill Your Wine While Retaining Its Flavor. Retains the Cold of Your Drink for a Longer Time Without Diluting Them Made from high-grade stainless steel, durable and reusable, easy to wash and clean. Never rusts or corrodes or wears Perfect for many occasions! Such as Valentine's Day, cocktail party, anniversary, Christmas, birthday etc. Also best as gifts for scotch or bourbon lovers. Each non-porous rounded cubes won't scuff or scratch your glasses. Best stones for whiskey in the market,Unique gift for spirit drinkers Securing a secret non toxic gel; extend the chilling!