The Beechler Bellite mouthpiece is cast from the finest surgical steel. The material is resistant to corrosion, breakage, or change in playing characteristics due to environmental considerations. The hardness of this metal provides an ultra fast response time to bring out the brilliance of the overtone series. Ligatures and caps are provided with all Beechler metal models. The customizing option is an alternate contour applied to the baffle and chamber of the mouthpiece. This provides acoustic and dynamic features desired by some professionals