Rico Contra Alto Clarinet Reeds highly playable, unfiled cut, and affordable price make it a fine choice for students, band directors and working musicians. Rico Reeds are the world's most popular reed and an excellent value. The Rico Contra Alto Clarinet Reed cut is unfiled and features a thinner profile and blank. Rico Contra Alto reeds are designed for Contra Alto Clarinet, Contra Bass Clarinet and Bass Saxophone. Box of 10 reeds.