Backun Ringless barrels use Backun"s professional bore taper and a streamlined ringless design. These barrels are the lightest weight of the professional models and offer exceptional vibration, response and tone. Morrie Backun Ringless Cocobolo Barrels are crafted from selected pieces of cocobolo and feature their traditional taper. The Ringless Barrels are a great addition to a student or intermediate clarinet and can bring warmth of tone and better response to those players looking for a new addition to their clarinet without having to purchase a new instrument.