A greater thickness that allows exceptional vibration and stability. That's the secret of these exceptional reeds. A rich and deep sound thanks to a new thickness. V12 reeds are made from reeds whose diameter is identical to that used for alto saxophone reeds. Thicker, these reed tabs provide a vibration on a wider range of sounds and their longevity naturally increases. An artisanal and eco-responsible process. From planting reeds to flow-pack packaging that protects reeds from moisture changes, Vandoren controls all stages of production of its famous reed tabs. Cut by hand, the canes are worn on the back of a man on the edge of a reed bed. They are then leafed, sun-dried, dried, sawn, arrowed, tabled, bevelled, ... No less than fifteen distinct production stages that produce a considerable volume of reed waste that is reused as a fertilizer for reed beds or as fuel for heating factory. Music in the service of ecology! Category: bass clarinet Material: reed Strength: 3,5 Thickness of tip: 0.10 Thickness of the heel: 3.15 Quantity: 5