The 5RV is an music industry standard mouthpiece for the discerning clarinetist. With a wonderful tone and traditional qualities this mouthpiece is the top choice by many top clarinet artists. Profile 88 Style The beak on the CM3018 Mouthpiece features the profile 88 design. This has a shallower beak on the mouthpiece giving a variety of different consequences. Most importantly the mouthpiece is more comfortable to play allowing the performer to hold the clarinet in a more horizontal position than than a traditional vertical design. 5RV Design the 5RV Mouthpiece has been an industry standard mouthpiece for the professional performer. Its unique qualities make it a favoured mouthpiece with many top clarinetists. The traditional tone lends itself to a more authentic clarinet sound and one that is often preferred in orchestral playing. Along with a strong reed the mouthpieces tone is completely uncompromised. For more information on Vandoren Clarinet Mouthpieces please find the PDF below. Cant find that specific mouthpiece online? Please contact us for more information. Features/Specifications Tip Opening: 1.065mm Facing Length: Medium Short Suitable For: Bb and A Clarinet Recommended Reed Strength: 3 → 4