Trumpet Mouthpiece Austin Custom Brass 5CS Curved Finish Silver finish. Personally, I usually use a larger mouthpiece, but I was able to use this one even though it's smaller. The sound doesn't break up and it's easy to control. It has a somewhat Arcas-like design, which is nostalgic. I purchased it from the ACB website a while ago. It's curved, and the pressure on the lips changes depending on the position, which is interesting. - Model: Austin Custom Brass 5CS - Color: Silver - Shape: Trumpet Mouthpiece - Inner Diameter: 5CS Thank you for looking.