Unprecedented Tone, Flexibility and Response. The D’Addario Select Jazz cut features a strong, well-defined heart and longer vamp, yielding unprecedented projection and a clear, fat tone, with unsurpassed flexibility and lightning-fast response. Unfiled. The filed is the area behind the vamp where the bark is sanded off in a straight line. It provides freedom of response, especially in the low register, making soft attacks and subtones easier. The file also makes the tone slightly brighter. Features Include: * Huge sound with powerful projection * Select grade cane for unsurpassed durability & longevity * Outstanding clarity, control and projection * Precise third strength grading provides unparalleled consistency * Optimized for contemporary and traditional jazz mouthpieces Box of 10.