Vandoren V12 Bass Clarinet Reeds, Size 3, Box of 5 Bb clarinet V12 reeds are manufactured from cane tubes with the same diameter as cane used for alto saxophone reeds. As a result, they have a thicker heel and are cut on a longer palette with a slightly thicker tip than the Traditional. The longer palette means that more of the reed is vibrating, resulting in a deeper, richer sound. The thicker tip gives body to the attack and also increases the longevity of the reed. The V12 offer a warm, rich and powerful sound.