The Conn 88H Symphony trombone features a .547 primary bore combined with a .562 bore traditional wrap F attachment that offers outstanding clarity and projection. The chrome plated nickel silver inner handslide tubes provide the ideal surface for smooth and quick handslide action. The rose brass material used in the professional bell and handslide material produces a deep, warm resonant sound while the clear lacquer finish adds a subtle warmth overall. The Conn 88H professional trombone is ideal for both symphonic and solo performance. Available in silver-plate finish as model 88HSP. Conn Symphony - .547 primary bore, .562 bore through F attachment, 8-1/2 rose brass bell, traditional wrap F attachment with standard rotor, rose brass outer slide, clear lacquer finish, Conn 5G mouthpiece, 7552C woodshell case.