This is a standard Denis Wick cornet mouthpiece, a staple in British brass bands. While the 4B is famous, this is the S model, intended for soprano cornet. ＜Catalog Specifications＞ ・Cup: Very shallow ・Inner Diameter (mm): 16.00 ・Rim Width (mm): 5.30 ※The cup is described as "very shallow," but since it's Denis Wick, it's relatively deeper compared to a Schilke 11AX or Bach 7E (lol). The item for sale has only been test-played a few times and is in almost new condition. The item will be packaged with bubble wrap and shipped via Yu-Packet Post Mini.