LOTUS Trumpet 7L Brass Gen3; mouthpiece for trumpet; cup diameter: 16.30 mm, comparable to Bach 7C, Monette B7F, Schilke 11C, Yamaha 11C4-7C; cup depth: medium (standard C-cup); bore: 3.7 mm; material: Brass (full and round sound and response), LOTUS gold plating: hypoallergenic, scratch-resistant and does not tarnish; full, rich sound and variety in the upper register; suitable for wind ensemble and orchestral playing in classical style, as well as jazz soloists.