The Bach 12 is a versatile jazz trombone. With a bore size of .500 inches, this Bach medium bore trombone produces a big, rich and fat tone combined with great resonance. The lightning slide action in this Bach Stradivarius trombone is unparalleled in comparison to any other trombone. This Bach medium bore trombone features an authentic Vincent Bach mouthpiece for sheer musical bliss. To protect it from external damage, this Bach Stradivarius trombone comes with a deluxe wood shell case ...