The Eastman ETR824S Professional Series Bb Trumpet is tuned to the key of Bb and is ideal for experienced players. This silver-plated trumpet features a .459” medium large bore and a one-piece, standard weight, yellow brass bell. With monel pistons, a two-piece valve casing with nickel-silver balusters and a Shires USA mouthpiece, the Pro Series Bb Trumpet comes with a deluxe case with storage pockets for accessories and backpack straps for comfortable transportation.