A Special FX company in Thailand created this tail for a Thai mini series. At the moment they are not selling tails to the general public and may never do so. I 'think' these tails do not have a monofin in the fluke. Unlike most silicone tails these tails are made with one giant mold instead of a several part mold. This means they do not have any seams down the side. A ton of detail is put into each tail.