These resin reeds offer a sound-reducing effect just by using them. The unique slit shape at the tip allows for sound reduction with the same amount of breath as usual. Used only for about 1 minute of testing. ■ AirThrough / AirThrough ■ AirThrough Reed ■ For Alto Saxophone ■ Strength: 2.5 ■ Size: Width 72mm x Height 16mm x Thickness 0.15-3.26mm