Features- Material: Durable ABS plastic.- Size: 90 * 25mm.- The diameter of the hole: 15mm.- Suitable for Bb clarinet.- High quality mouthpiece gives you the sound of metal with the control and affordability of rubber or plastic.- It is in good used condition，no chips or bite marks.Package Including1 * Professional Clarinet Mouthpiece Bolwtorch for Bb Clarinet (Transparent)