LOTUS Trumpet 3S Brass Gen3; mouthpiece for trumpet; cup diameter: 16.60 mm, comparable to Bach E, Monette B6L S1/BL2, Schilke 13A4, Warburton 5SV and Yamaha 13A4; cup depth: shallow; bore: 3.6 mm; material: brass (full and round sound and response), LOTUS gold plating: hypoallergenic, scratch-resistant and does not tarnish; full, round sound and response; suitable for lead playing