Convertible models offer the advantage of two instruments in one.
Straight and F rotor sections can be interchanged by simply removing the tuning slide and loosening two adjusting screws. Open wrap models avoid sharp tubing bends for a more free blowing instrument. Balanced Valve TM models eliminate the tight bends found in traditional rotors resulting a less resistant F rotor section. The model 36KD offers an easily detachable bell for customizing. Brass outer slide.