These sensational mutes have a seamless construction and wooden bases. The Denis wick Fibre straight mute for Bb trumpet is suitable for use in orchestra and bands but are also great for jazz, making a gentle Duke Ellington-style sound that is great for jazz-ensemble work. They have the excellent intonation that is the hallmark of Denis Wick mutes, but provide a professional-quality mute at a student price.Great tone with easy to control quiet notes and a sizzling forte sound Superb intonation in all registers Even response from high to low Suitable for use in band and orchestral music Beautiful sound for jazz Sturdy construction with a wooden base that gives extra resonance Real cork that flexes and takes on the shape of the instrument"s bell Protective bumper strip to prevent damage to bell Greatly reduces sound output - suitable for home practice Seamless construction