Thank you for viewing! I will carefully package and ship it to prevent water damage and folding. This is an old model and seems to be unavailable now. The current model uses Ag999 and costs ¥30,000. As proof of solid silver, "925" is stamped small in the center of the back (see photo 3). 33mm is compatible with piccolo, flute, E♭ clarinet, B♭ clarinet, A clarinet, saxophone, trumpet, and cornet! The Leafleck is an item that improves sound transmission by attaching it to the joint of various wind instruments. It improves volume and resonance, allowing for more diverse musical expression. The sterling silver (Ag925) model, which uses luxurious silver, provides a firm blowing feel unique to silver, expanding the range of expression. It is recommended for beginners who have difficulty getting their breath into the instrument, as well as for advanced players.