Conn Model 88HO Bb/F 

This instrument has won overwhelming acclaim for its evenness of sound‚ excellent response‚ and flexibility of performance.

Features:

• Bore: 13.89mm (0.547"), 14.27mm (0.562") bore through open wrap F attachment
• Bell: 216mm (8-1/2") rose brass
• Rose brass outer slide
• Lacquer finish
• Conn 5G mouthpiece
• Deluxe woodshell case