Horn Mouthpiece Bach BACH 18 Model: Bach 18 Finish: Silver-plated Cup: V-cup, medium Cup Inner Diameter: 16.15mm Rim Thickness: narrow Shank: US This is a Bach horn mouthpiece. I bought it about a year ago, but it didn't suit me, so I'm selling it. It's the smallest horn mouthpiece made by BACH. It might be suitable for those with thin lips, those who lack stamina, or those who want to play without using too much force. There are some scratches on the shank. Feel free to ask for additional photos or price reductions.