Gleichweit Bb- Clarinet DO - W, Mouthpiece For Bb Clarinet, Viennese cut, Daniel Ottensamer model, Viennese bore (15.4 mm), Facing length: 33 mm, Tip opening: 0.86 mm, For wooden reeds, Recommended reeds: Leuthner Standard and Professional (Viennese cut) and Pilgerstorfer Concerto, Vienna, Morré ""Pi""