Camptag&trade; Ice Ball Maker Mold - Black Flexible Silicone Ice Tray -Molds 4 X 4.5cm Round Ice Ball Spheres 100% BPA Free food grade silicone ice cube tray with lid; FDA approved Silicone won't crack or break like plastic trays; Easy to fill, Easy to use, Easy to clean, Dishwasher safe The secret to an immaculate cocktail, whiskey, or scotch lies in cooling the spirits without diluting the delicate flavors last for hours, while keeping the drinks cold-not diluted 4 Large round ice balls at a time, Spend more time using your ice balls and less time making them.