Vandoren Traditional 5RV Bb Clarinet MouthpieceFacing: Med Close Ligature: Not Included MATERIAL: Hard Rubber (Ebonite) Tip Opening: 106. 5 Considered the industry standard, the Vandoren 5RV represents one of the world's most popular mouthpieces. Responsive and easy to control in all registers. Like the 5RV, Vandoren 5RV Lyre Bb clarinet mouthpiece is an excellent choice for the advancing student or for general playing. With a slightly more open tip, the Vandoren 5RV Lyre takes a slightly lighter