The 630 series is the new standard for the beginning clarinetist. These models are offered in two different bore sizes to meet the demands of most educators. Available in both Grenadilla wood and ABS body materials, these instruments are built to produce a full, rich tone quality with exceptional intonation and playability. .577" Bore Offset Trill Keys 65mm barrel ABS resin Matte finish Nickel silver bell ring Comfortable C/G key riser Undercut tone holes Forged nickel-plated nickel silver keys Adjustable thumb rest Adjustable neck strap ABS molded case