Tetrapods, wave-dissipating blocks, gray miniature objects made of polyresin, perfect for interior decoration. These are safe, commercially available products intended for use as objects. They are not handmade items. This is a popular item, but due to high costs, it has been discontinued, making it an extremely rare item. It's a masterpiece that will never be available again. Suitable for aquarium displays and objects. For medaka rice fish, turtles, guppies, and neon tetras. Set of 4. - Type: Miniature object - Color: Gray - Material: Polyresin - Size: Approximately 3.5cm x 4.2cm Thank you for viewing. Due to the rarity of this popular item, no discounts are available. This is a product I don't really want to list, a product I don't want to part with, and a favorite item of mine. It's a product I finally found after a lot of effort.