JUN’S Renaissance Brassworks GIGAMASTER 3-2 Gold Plated Trumpet Mouthpiece Heat Treatment, Hairline Finish Compared to other companies, the rim diameter is equivalent to a 5C-3C size. The cup depth is equivalent to a generally recognized B cup, but it is an original design. It doesn't have the blurring of the outline or the difficulty in handling that is often found in deeper cups, and it is finished to be able to handle a wide range of expressions. Solo, ensemble, orchestra It can be used in a variety of situations. You can enjoy our unique three-dimensional sound. - Model: Trumpet Mouthpiece - Material: Gold Plated Thank you for viewing.