Vincent Bach K350- 4 Euphonium MegaTone Mouthpiece £100.00 (+ postage of £4.00) Very large cup, principally used by players having healthy,strong embouchures. Medium Cup Cup Diameter = 26.00mm Rim Shape = Medium wide,well rounded Quantity: 12345678910 Buy Now: Vincent Bach K350 - 5GS Euphonium MegaTone £100.00 (+ postage of £4.00) For players with good,natural embourchures. Rather large cup. Produces a full, mellow, sonorous tone. With larger "G"(17/64) throat and #420 backbore. Medium Cup Cup Diameter = 25.50MM Rim Shape = Medium wide,semi-flat      Buy Now: Vincent Bach K350 - 6.1/2AM Euphonium MegaTone £100.00 (+ postage of £4.00) Symphonic model mouthpiece features the same cup and rim as No. 6.1/2A but with symphonic throat and backbore. Medium Deep Cup Cup Diameter = 25.40mm Rim Shape = Medium wide,well rounded.    Quantity: 12345678910 Buy Now: Vincent Bach K350-7C Euphonium MegaTone Mouthpiece £100.00 (+ postage of £4.00) For players who prefer a medium-large cup to assure s large volume of tone. Rather shallow cup produces great brilliancy. Medium Shallow Cup Cup Diameter = 24.75mm Rim Shape = Medium wide, not too sharp           Buy Now: