- LOTUS Trumpet 3L Brass Gen3; mouthpiece for trumpet; cup diameter: 16.60 mm; cup depth: medium deep; bore: 3.9 mm; material: brass, LOTUS Golden coating: hypoallergenic, scratch-resistant and does not tarnish; full and round sound; clear response; suitable for classical or jazz THIS ITEM IS CURRENTLY NOT AVAILABLE YOU CAN CONFIRM THIS INFORMATION BY CLICKING ON ITEM