"Michael Rath R9 Bass Hagmann, Bb/ F/ Gb/ D Bass Trombone, Bore Ø: 0,562"" (14.27 mm), Hagmann valve section, Bell size Ø: 9 - 1/2"" (241.30mm), Brass bell, Outer slide: Brass, Brass tuning slide, Mouth pipe 9, Clear lacquer finish, Case and mouth...