Alliance DC2 Mouthpiece (David Childs Model) This is a slightly larger mouthpiece, but it produces a balanced sound across a wide range, especially rich in the lower register. Please note that there are some scratches on the shank. It will be shipped in the original pouch (pictured). This is a used item, so please consider this before purchasing. Please refrain from purchasing if you are overly concerned about condition. Rim Inner Diameter: 26.40 Bore Diameter: 7.40 Retail Price: ¥28,600 Price reduced from ¥13,800.