These Vandoren Reeds Alto Sax 4.5 V21 offers a clean particularly warm and centered sound while providing an excellent sound projection. The V21 reed allows precise articulation and great ease in achieving large interval leaps. Allowing plenty of versatility to the musician. Vandoren V21 Saxophone Reeds The V21 is a premium versatile reed which is available in any style with any mouthpiece you will always achieve maximum results with this reed. This is the first saxophone reed with a conical shape. It offers a clean particularly warm and centered sound while providing an excellent sound projection. Features/Specifications Reed Type: V21 Saxophone Size: Alto Box Contents: 10 Reed Strength: 4.5