Please always send a message before making a purchase. New, unused flute head cork. This is a head cork for flutes. Made in Japan from natural Portuguese cork. 30 pieces available for sale. This is from the person who used to make genuine flute head corks for Yamaha instruments. Made with natural Portuguese cork. H: 33mm, Diameter 18.5mm, Inner Diameter 4.0mm The only workshop in Japan that processed and manufactured corks for musical instruments has closed due to the passing of the craftsman. These are the items that were handled by that person. In accordance with the deceased's wishes to supply at a fair value, we are selling these. Sales will end when stock runs out. As the only workshop in Japan is gone, some items will no longer be available in the market. Commercially available beautiful corks are bleached or have holes filled with powder, but natural corks have natural blemishes and holes, so please understand. Sales proceeds will be used for the activities of protecting cats. Regarding the sale of corks, we will only sell to those who communicate with us via messages, so thank you for your understanding. Instrument adjustment, maintenance, musical instrument workshop, wind instrument repair workshop, cork replacement, overhaul