Designed specifically for the unique American sound, the Vandoren V12 Bb Clarinet Reed provides more wood in the heart and heel areas of the reed. The extra wood of the V12 clarinet reed keeps the sound very focused at extreme dynamic levels and works extremely well with longer faced mouthpieces. The choice of more professional clarinetists, the Vandoren V12 clarinet reeds come in a box of 10 individual reeds and are available in strengths 2.5 through 5+.