Description de chez Thomann : - Brand Brass 4 S Flugelhorn Mouthpiece; US shank; made of a special plastic material; black; cup inner diameter: 16.70mm; rim: 5.03mm; cup depth: deep (18.60mm); bore: 4.10mm; the deep cup provides a full tone, suitable for brass bands; Turboblow effect; best solution for allergic person with intolerance against metal; feels very comfortable, also by extrem coldness; easy to clean