Willie's eBolution (ebonite) mouthpiece 5C. Retail price: ¥34,100 I've been using this for about a year, but I'm selling it because I'm switching to a different size. There are some scratches on the shank, but it's not deterioration. I think it can still be used for a long time. This mouthpiece has a warm and resonant sound that you don't get with metal, while still feeling quite similar to a metal mouthpiece when you play. It can be used for chamber music, wind ensemble, orchestra, JAZZ, and any other genre. Highly recommended for those with metal allergies, and for those looking for a mouthpiece with a soft and warm tone! This is a made-to-order product, and it takes 1-2 months to produce. This is a highly recommended product, so it's first come, first served!