Grand Concert Select Evolution Bb Clarinet Reeds
Grand Concert Select Evolution reeds are unfiled and have more material in the shoulders of the vamp. They feature a traditional tip and the thickest spine of the GCS family, providing a full sound. Of all Rico's clarinet reeds,

Traditional tip shape for quick response
Thickest blank of the GCS family, for more body to the attack
Heavier spine for greater sound projection