• Yamaha's official original-equipment 4C clarinet mouthpiece, identical to what's included with new Yamaha standard, intermediate and professional series clarinets.
• The 4C size was designed by Yamaha so that even a beginner can make a terrific sound
• Made from safe and durable phenol resin plastic.
• State of the art manufacturing produces an extremely high quality and consistent mouthpiece.
• Fits any brand of standard clarinet.