This is a Holton standard model, similar to the Bach 180ML. The finger hook has been replaced with a bar-shaped one, like those used on the inderbinen silverart. This is undoubtedly a one-of-a-kind customization in the world. The customization is not only about appearance, but also about the playing feel and sound. The pistons and slides are smooth without any sticking. It is also compatible with Bach parts. Compared to Bach, it is slightly thicker and heavier, and the bell has an oxidation film, so the tone is calm and well-rounded. Due to the resistance, it feels slightly narrower despite being an ML bore. The 3rd valve stop has been changed to a reverse-phase type, making it look similar to a N.Y. Bach. It is an excellent instrument that can handle everything from the dark sounds required in combo jazz to the powerful sounds of big bands and the symphonic sounds required in wind orchestras. It responds well, and when played with a strong breath, it produces a considerable amount of overtones. There are some uneven spots on the oxidation film, but they should gradually blend in and become less noticeable with daily cleaning and polishing. A case will be included for transportation purposes only.