The Jupiter JTR500 standard Bb Trumpet has a lacquered brass body with stainless steel pistons. This free blowing, well-balanced instrument is designed to be comfortable beginners. Stainless Steel Pistons have remarkably smooth, fast action for improved agility and playability Adjustable 1st and 3rd Valve Slide allows the player to custom fit the instrument to achieve maximum performance comfort. Key of Bb Lacquered Brass Body 4.8" Bell Adjustable 3rd Valve Slide .460" Bore 1st Valve Slide Thumb Saddle Adjustable 3rd Valve Slide With Softcase