Lacquered Yellow Brass, Bb with Open Wrap F Attachment, .547" Large Bore with .563" F Section, Hand Crafted 8.5" Bell, Three Interchangeable Leadpipes, brass outer slide with nickel silver crook, chromed inner slides, mechanical-link tapered gold-plated rotary valve, 24K Gold-plated balance, includes JBM-L65AL mouthpiece and XO Classic Series case (KC-46XC)