Thank you for viewing. This is a YAMAHA 11C4 trumpet mouthpiece. I believe this is one of the most standard shapes for a trumpet mouthpiece. I think I bought it about 20 years ago. It's old, so the condition is honestly not great, but there are no major dents or scratches, and it's perfectly usable for playing. I hope beginners or those who want to try playing will use it. Please consider this item, understanding that it is a used product.