Make sure this fits by entering your model number. Crystal Clear : Our crystal clear ice ball maker mold is made with long-lasting freeze technology, that makes the ice while retaining perfect clarity. The frozen ice balls are so crystal clear that they are nearly invisible in water, which is as enjoyable as the clear ice you get in the better bars and restaurants. (We suggest that use water boil it first let it cool down, pure water or filtered water. It will help to make clear ice spheres.） Large and slow melting ice spheres: Our large 2.4 inch ice ball melt slower than the conventional ice cubes, keeps drinks cold longer, may last long enough to pour another beverage over it. And as the round ice ball don’t melt so fast, they preserve the full-flavor of your drink, without watering it down.