OnDaRox Premium 4 x 4.5cm Silicone Ice Ball Maker Mold for Whiskey Ice Balls and Ice Spheres OnDaRox is the perfect "whiskey ball" and perfect for your your bourbon, scotch or other sipping beverages Equally Perfect for Blender Bottles because the ice balls mix your drink while they chill it. Better than plastic or metal, food-grade silicone is so flexible the ice balls peel right out! Freezer and Oven Safe up to 450 F Makes Beautiful Ice Spheres that enhance your drinking experience and show you are sophisticated and discerning about what you serve in your castle. Guaranteed for 366 days! If our product fails, let us know and we will take care of you. Customer service is our lifeblood. If you ever have a question or complaint, please let us know.