The Conn Symphony 88HSO tenor trombone is like the Conn 88HO but with a Sterling Silver brass bell.
Bell: 8-1/2 (216mm) Sterling Silver Bell
Bore: .547 (13.89mm) large bore
Bore through open wrap F attachment: .562 (14.27mm)
Outer slide: Rose Brass
Mouthpiece: Conn 5G
Case: 7552L Deluxe wood shell case