Grand Concert Select reeds are filed and feature a traditional tip and thicker spine providing a quick response. They have a traditional blank thickness; traditional blanks are made from cane closer to the bark adding more brilliance to the sound. Stable and consistent from pianissimo to fortissimo the revolutionary cut provides unrivaled flexibility for precise articulation and interval changes. Grand Concert Select reeds are also well suited for ensemble playing. D Addario s unwavering commitment to innovation and consistency has resulted in a new era of products for the modern clarinetist and saxophonist. Through natural farming and harvesting processes in the cane fields and digitally-controlled precision in the crafting of reeds and mouthpieces the D Addario Woodwinds line of accessories allows players of all ages and abilities to worry less about their equipment and more about making music. Balanced rails for tone quality and control Strength 2.0 Filed cut box of 5 reeds Thicker heel for increased depth of sound Balanced spine and tip for ease of playing Offered in strengths 2.0 to 4.0