I'd looked at multiple suppliers of \"Clear Ice\" makers. There were a few that made the same claim however, I hesitated due to the cost. Taking a chance, I'd ordered this one. As I am on well water, I was a bit skeptical on how the results would turn out. Four batches in, I now have 16 very clear and spherical ice balls for that next drink presentation. I do recommend allowing 36-48 hours for freezing as these are quite large and form in an insulated container.