Professional Quena Bamboo with Ebony Mouthpiece. Custom Key. Medium. Quena Profesional Ebano Mouthpiece made of Ebony hardwood inlay and ergonomic embouchure. External circumference is 20 to 26.6 millimeters for the G4 quena. Other keys vary Lacquered to protect instrument. Tuning at 440 Hz. Select your preferred Key and we will build one for you. Embocadura con la incrustacin de madera dura (bano). Detalles de agujeros redondeados