B000XZZFR0 Schilke Standard Series Trumpet Mouthpiece Group I In Silver 11 Silver

Cup Diameter (First number in label): cups range from shallow to deep in numeric order from low to highCup Volume (First letter in label): volume ranges from A to E from small to large – A: Small; B: Medium-Small; C: Medium (Standard); D: Medium-Large; E: LargeRim Contour (Second number in label): rims range from roundest to slightly rounded in numeric order from low to high – 1: Roundest; 2: Simi-Round; 3: Standard; 4: Semi-Flat; 5: Slightly RoundedBackbore (Last letter in label): backbores ran