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. Resulting in reeds that are more consistent within the same strength.
 
Note you can order the reeds individually or in boxes of 10. Just specify "10" in the quantity to buy a box.