This Tenor Bass Trombone really is of suberb quality! It has a clear and resonant tone, and of course comes with a semi - rigid case. Developed under the strict supervision of the J Michael engineers and musicians, it boasts a yellow brass slide (yellow brass being more resistant to everyday wear and tear) and a Bb/F Rotary key. This Trombone has proved a firm favourite with both the aspiring or experienced musician, both experiencing the high level of quality and sound expected from such a renowned manufacturer! Specifications: Clear lacquer finish Medium size dual bore 12.70mm/13.34mm (0.5"/0.53") Bell Size 205mm (8.1") Yellow Brass Slide (More resistant) Single Rotor Good quality carrying case