YSL-620/640 Tenor Trombones with F Attachment
| YSL-620 | YSL-640 | ||
|---|---|---|---|
| Key | Bb/F | Bb/F | |
| Bell Material | Yellow brass | Yellow brass | |
| Bell Diameter | 214.4mm (8 1/2") | 214.4mm (8 1/2") | |
| Bore Size | L: 13.89mm (0.547") | ML: 13.34mm (0.525") | |
| Outer Slide Material | Yellow brass | Yellow brass | |
| Inner Slide Material | Nickel silver | Nickel silver | |
| Finish | Gold lacquer | Gold lacquer | |
| Mouthpiece | SL-48L | SL-48S | |
| Case | Included | Included | |
