Features: * brand new and high quality. *Clarinet reeds 1.5,2.0,2.5,3.0,3.5,4.0 have a growth period of more than two and a half years. It is not easy to be deformed. *Every piece has the consistent size，Can create more stable sound. *Harvested by hand, made by digital reed-making technology that promotes excellent response in all registers. *The reeds are naturally air-dried for more than two years. *You can prepare a few reeds for change, which can effectively extend the life of the alto Clarinet. Description: Strength: 1.5,2.0,2.5,3.0,3.5,4.0 (Optional) Material: Reed Weight:30g Package include: 10 x Reeds Note: In order to distinguish the Strength,the appearance is different. 【Long-lasting and for Durable】These Bb clarinet reeds have a growth period of more than two and a half years, they are resistant to deformation and maintain their shape for a longer period. 【Consistent Size and Stable Sound】Each reed in this set has a consistent size, allowing for stable and reliable sound production, a smooth playing experience. 【 Craftsmanship】These reeds are harvested by hand and made using advanced digital reed-making technology, resulting in excellent response and performance across all registers. 【Naturally Air-dried】The reeds are naturally air-dried for more than two years, enhancing their stability and tonal quality, providing a rich and vibrant sound. 【Extended Lifespan and Convenience】With a set of reeds at your disposal, you can easily replace them, effectively extending the lifespan of your alto clarinet and optimal performance.