Yamaha's Intermediate 421G model bass trombone features many of the qualities of our top pro models, yet is available at a surprisingly affordable price. It has the same bell and bore size as most pro models, and the bell is gold-brass for a sound both rich and full.
Bell Material Gold brass
Bell Diameter 241mm (9 1/2")
Bore Size LL: 14.3mm (0.563")
Outer Slide Material Nickel silver
Inner Slide Material Nickel silver
Finish Clear lacquer