Manufacturer: JK Series: EXCLUSIVE Size: 01BK New Retail Price: ¥36,960 Box: Yes Accessories: None ▶ This is a JK mouthpiece for bass trombone. It's a combination of an inner diameter of 01 (28.50mm) and a BK cup (very deep). It's similar in specs to a Schilke 59, and I ordered it because I wanted a European-style mouthpiece. While it's relatively large for a bass mouthpiece, I found it easy to control for its size, and I felt it produced a high-density sound with little unevenness across the entire range. ▶ This JK Exclusive is a staple for German-made hybrid trombones like K&H and Chromat, but surprisingly, many professional players also use this model with Michael Rath trombones. It's a gem that I encourage those who have been put off by its appearance to try. ▶ I ordered this new about six months ago. I haven't used it that much, so it's in relatively good condition. ▶ JK bass mouthpieces, especially with a gold rim, are rarely found in stores. Please take this opportunity to try it! ※ We accept questions and price negotiations. ※ There are minor scratches and shank marks from use. Please understand.