Horn Mouthpiece Tilz McWilliam 1W American Shank Retail Price: Approximately 16,000 yen I purchased this just last April. I selected this one from several, based on its responsiveness and how well it fit my lips. I recently settled on a different mouthpiece, so I'm selling this one, even though I just bought it. The McWilliam is a model highly regarded by professional players and has been very well-regarded for many years. The 1W has a deep cup and a slightly larger inner rim diameter than standard models. * Inner cup diameter: 17.7mm * Bore (Throat): 4.5mm * Cup: Slightly deep * American Shank