Avanti Stainless Steel Ice Cubes 4pc Set. Enjoy a refreshing chilled drink with these stainless steel ice cubes from Avanti. Unlike traditional ice cubes, these will not dilute your drink and will keep your drink chilled for longer. The stainless steel ice cubes are filled with a food safe coolant gel and the outside is made from 188 stainless steel. Once frozen, these will stay frozen for up to one hour inside your favourite beverage.