Horn Mouthpiece Furthermore, I lowered it a bit. Willies S78 M2 S AX Rim inner diameter: 17.8mm Rim shape: S rim (gradually slopes downward towards the outside) Cup shape: Slightly U-shaped V cup (similar to Mack Wiliam 2) Throat diameter: 4.2mm Cup appearance: S Plank (Light type: shape with reduced thickness on the underside of the rim) Shank: AX (Designed for Alexander and double-tapered YAMAHA) Because the cup is slightly deeper, it has a calm and soft tone. There are some scratches on the throat. I purchased this here. I am selling it because I purchased a different model number. It is used, so please take that into consideration before purchasing. I am not considering a discount. New price: 33,000 yen Popular item, first come, first served!