Perantucci PT-44 tuba mouthpiece, cup diameter: 33,0 mm, medium large depth, funnel shaped, rim: 7,5 mm, rounded inner and sharp outer edges, bore: 8,4 mm. Model PT-44 provides a strong fundamental and colorful sound. It gives good projection to larger instruments. The fine response and flexibility makes this an excellent mouthpiece for the modern CC tuba player, gold plated