Alexander French Horn Mouthpiece 8M Silver Plated Rim Inner Diameter: 17.5mm V Cup Depth: I believe it's medium-deep. Throat: 4.0mm This mouthpiece has a slightly wider throat than the standard 8, and is a very well-balanced mouthpiece. New ones cost over 16,000 yen, and they are currently in short supply, so how about taking this opportunity?