The Howard "Model 2" Clarinet Barrel represents the culmination of more than three years of research and development. The unique bore design, a variant of the traditional Moenning-style taper, impoves intonation and focus over just about any factory-produced barrel. Robust socket walls and a 34.5 mm diameter, in addition to providing added stability, will promote warmth and beauty in your sound. Every barrel is carefully hand crafted in the HWC shop and is available in a variety of woods. While these barrels are suited to both Bb and A clarinet, usually 64-66 mm are recommended for A clarinet, and 65-68 mm recommended for Bb.