Get awfully clear, crisp and excellent sound quality with the TB300 Trombone. The outer slide material is made up of Brass that lets this Bach student Trombone deliver pure and very deep tone quality. The outer material is a hand-hammered material, made only to make this Bach 8-inch Trombone more durable and reliable. The inside of this Bach student Trombone is made from a Chrome-Plated Nickel Silver alloy that provides effortless and efficient action and reactions. Featuring a 0.525-inch ...