Rim Inner Diameter: 17.8mm Rim Shape: S Rim (shape that slopes gently outward) Cup Shape: Slightly U-shaped V cup (similar to Mac Williams 2) Throat Diameter: 4.2mm Cup Exterior: S Blank (Light type: shape with reduced thickness on the lower side of the rim) Shank: AX (Designed for Alexander and double-tapered YAMAHA instruments) Because the cup is slightly deeper, it produces a calm, soft tone. Current new price: 33,000 yen This is a popular mouthpiece, so it's first come, first served.