Lacquered yellow brass bb with traditional wrap f attachment .547 Inch large bore with .563 Inch f section hands crafted 8.5 Inch rose brass bell three interchangeable leadpipes brass outer slide with nickel silver crooks 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