willie's esperanza SP (Small Bore) Almost unused and in beautiful condition. There may be some minor scratches from storage. No returns accepted. Since there is no box, I plan to carefully pack it and ship it via Takkyubin Compact. [Product Description from the Store] One of the most popular models among willie's mouthpieces. "esperanza," the new mouthpiece supervised by Hideaki Nakaji, following the emperador. The rim diameter is equivalent to Bach 7C, and the rim is smoother than Bach, making it less tiring and easier to control from low to high notes. The drill diameter is 5.8, and it also features an Apollo throat. The backbore is the same as the emperador. A new lineup of mouthpieces for small bore trombones has arrived. Please give it a try.