Stork Vacchiano Series 1.5D Cornet Mouthpiece Although it's a cornet mouthpiece, it's a shallow type, so it seems suitable for piccolo trumpets as well. Specifications: Inner Rim Diameter: 17.75mm Cup: M.shallow Throat (27): 3.65mm Backbore (B): Standard That's the gist of it. Comes with the box and a Stork sticker. #stork #cornet