The Breslmair G3C cup, designed for the 3-piece modular system for Breslmair trumpet mouthpieces, delivers exceptional craftsmanship and outstanding sound quality. With a bore diameter of 3.70 mm, the G3C is modeled after the legendary Bach 3C Mt. Vernon cup design. Featuring a medium cup depth, this model offers a versatile response and is especially well-suited for modern music and brass band performance. Whether in ensemble or solo settings, the G3C cup provides the ideal balance of projection, control, and comfort.