Features:100% brand new and high quality Designed for trombone mouthpiece. Allows you to get a loud sound with smooth tone. Made of high quality brass, durable and sturdy. This mouthpiece is suitable for alto trombone, exquisite workmanship and durable. Used for Trombone, Baritone and Euphonium. Specifications:Material: Cooper Box Size: 10x5x4.6cm/3.94x1.97x1.81inches Mouth Piece Size:8.5x4x1.5cm/3.35x1.57x0.59inches Note:Please allow an error of 0-1cm due to manual measurement.Package includes:1 x Alto Trombone 5G Blowing Nozzle