Roy Benson wind instruments are the epitome for innovative instruments in amazing price range for years. Together with professional musicians and well-known instrument makers the ROY BENSON team sets new trends with creative ideas, allowing the user to provide its musical ideas come true.- ML bore Brass bell diameter: 119 mm – goldbrass lead pipe – Nickel silver outer slides are – Stainless Steel Valves trigger on the 1st and 3rd valve slide 2 water keys – Silver Plated – Includes mouthpiece – Easy Square Case with backpack straps