The Willson 2900 Euphonium, is the choice of many top professional players. It has a 3 top + 1 side compensating valve system, 11.5" bell, 3 water keys and valve water catchers. The 2900 has the European(medium) shank mouthpiece receiver. It is available in lacquer or silver, and has the option of a main tuning slide trigger. Includes case and mouthpiece.