Instant purchase is welcome. French Horn Mouthpiece Tilz McWilliam Model 2 (No box, mouthpiece only) Inner rim diameter: 17.5 mm Bore size: 4.2 mm Cup depth: Medium Shallow Rim thickness: Medium Wide American shank I liked the tone and playability, and I've used it for about 5 years in total. There are scratches from polishing and signs of use. There is a spot where the plating is peeled off on the outer rim (photo 1). There is a slight shank distortion (photo 4). It has been cleaned. This is a used item, so please purchase only if you understand this.