Perantucci PT-50+ tuba mouthpiece, heavy weight, cup diameter: 33,0 mm, deep, funnel shaped cup, rim: 7,5 mm, flat rim with sharp inner edge, bore: 8,3 mm. Model PT-50 is the largest funnel-shaped style in the current line. The sharp inner rim aids articulation and tonal clarity in this well-above-average cup volume. This model provides huge dynamic range and fast response. It aids low register playing while still providing a good upper range. It is recommended for advanced players who prefer a truly large mouthpiece. Available in both standard and heavy shell PT-50+ versions! A Perantucci Best-Seller, gold plated