Trumpet Mouthpiece Austin Custom Brass 5CS Curved Finish Silver finish. I liked the ACB 5CS I bought earlier, so I purchased a larger size that I usually use, new from the ACB website. In my personal opinion, it's less prone to cracking and easier to control than Bach. It has a somewhat Arcas-like design, which is nostalgic. It's a slightly short style, like a Monette. - Model: Trumpet Mouthpiece - Material: Silver Plated - Size: Bore 2CS - Features: Slightly Short Thank you for looking.