These are the bones removed from cuttlefish used for sashimi. The cuttlefish were prepared by a fishmonger. They have been sterilized in boiling water for 10 minutes and then sun-dried for 3 days. There are 13 pieces. They are 13cm to 14cm long. This product is fragile and may break during shipping. Please be aware of this possibility. The product in the photos will be shipped, so please check the contents in the photos. If you have any questions, please feel free to ask.