Gleichweit Bb- Clarinet TH-W, Mouthpiece for Bb Clarinet, Viennese cut, Thomas Holzmann model, Viennese bore (15,4 mm), Facing length: 33 mm, Tip opening: 0.83 mm, For wooden reeds, Recommended reeds: Leuthner Standard and Professional (Viennese cut) and Pilgerstorfer Concerto, Vienna, Morré ""Pi