VINCENT BACH Trumpet Mouthpiece 10-1/2C This is a mouthpiece from VINCENT BACH, a standard trumpet manufacturer, size 10-1/2C. This size has a small rim, but a deep cup, so I think it's a size that's quite easy to handle. I think it can be used for pop music, as well as for special instruments like D trumpets and piccolo trumpets. There are slight scratches on the shank, but overall it's in good condition. 【10-1/2C】 Inner Rim Diameter: 15.90mm Rim Shape: Medium Wide Cup: Medium Throat No. 27 (Diameter: 3.66mm) Silver-plated finish