Thank you for viewing! ^ ^ I have 11 years of experience in making breath builders, and my original design has two holes, which provides a significant load and has been well-received by many brass bands (and other musical groups)! * If the load is too heavy, please cover the hole on the right side of the mouthpiece with your finger. The acrylic pipe that connects the main body to the blowing hose is glued with acrylic adhesive, so the hose can be removed and cleaned for hygiene♩ If you wish to purchase multiple items, please refer to the following: * For single item sales, we are selling them at a discounted price of 715 yen (originally 1299 yen) for those who want to try them out. However, the unit price for purchases of 2 to 9 items is set from 893 yen to 898 yen. (For purchases of 2 and 3 items, we can ship via Yu-Packet Plus for a shipping fee of 455 yen, but for purchases of 4 to 10 items, we will ship via Rakuraku Mercari's Takkyubin 60 size, which costs 750 yen for shipping) If you purchase a maximum of 10 items at once, the price will be 10,000 yen (unit price 825 yen). We are waiting for your immediate purchase, questions, and comments♩ #BreathBuilder #BrassBand #Diet #Training