Stainless steel Size: Approximately 3cm All items are free shipping (price includes shipping). You can purchase directly without commenting. Usually, we will ship via regular mail from Sapporo within 3 business days after payment is received. We ship on Mondays, Wednesdays, and Fridays, excluding holidays. We are closed on Tuesdays, Thursdays, Saturdays, Sundays, and holidays. (We cannot reply to questions or transaction messages during this time) Delivery is expected within 3-4 business days after shipping, excluding Saturdays, Sundays, and holidays. There is no tracking number. If you are not at home and the item does not fit in your mailbox, a notice from Japan Post will be left, and the item will be held at your local post office for one week. Please check the notice and request redelivery from Japan Post. If you cannot find the notice, please contact your local post office before the storage period expires. We are sorry, but we do not accept price negotiations. Please understand that all items listed are not subject to price reduction. If there are comments requesting unreasonable price reductions, we will block the user. If multiple items are purchased and can be shipped together, we will ship them together as much as possible, but we will not offer a discount in that case either. Also, we do not accept requests for additional images.