This African blackwood clarinet barrel with silver rings has a profund affect on pitch and tonal coloration. Think of the barrel as the "interface" between clarinet and mouthpiece. FOBES barrels feature an inverted cone-style bore and are designed to work in conjunction with FOBES mouthpieces which have a medium-large bore. These silver-ringed barrels have the same taper and sound as FOBES' solid-wood barrels, but the rings add focus.