This beautiful nickel plated B Flat Trumpet is ideal for the beginning student. The trumpet is used in many forms of music, including Classical, Jazz, Rock, Blues, Pop, Ska, Polka, and Funk, to name a few. This Trumpet is in the key of Bb and has a beautiful nickel body. It has a bell diameter of 123mm and a bore size of 11.66. This Trumpet set has everything you need to get started with your new Trumpet. Case included. Includes a durable case and mouthpiece. Features: B Flat: Bb key Material: nickel body Size: Bore size 11.66mm, bell diameter 123mm Finish: nickel plated Beautiful Case Stable construction and play comfortable.