Hammond Design 12L For Euphonium and Trombone Large shank mouthpiece. I mainly used it with Wilson and Besson euphoniums. Since it's a trombone mouthpiece, the articulation is very clear, so I think it's a good choice for people whose sound tends to be unclear. The size is slightly larger than a 5G, so it's recommended for people who usually use a 5G size and are looking for something else. The list price is 37,400 yen, but since it's a used item, I'm offering it for less than half price. If you have any questions about the product or would like to negotiate the price, please feel free to comment!