Vincent Bach K335-18 Tuba MegaTone Mouthpiece. £125.00 (+ postage of £5.00) Our best-selling mouthpiece for all-round work. Has an even register, substantial tone of excellent carrying power. Medium Cup Cup Diameter = 32.10mm Rim Shape = Medium wide Buy Now: Vincent Bach K335 - 24AW Tuba MegaTone Mouthpiece. £125.00 (+ postage of £5.00) An excellent mouthpiece whenever a sonorous dark tone quality of enormous volume is desirable. Deep Cup Cup Diameter = 31.25mm Rim Shape = Wide, well rounded          Buy Now: