For many years Vincent Bach Trombones have been the choice for professional players around the world because of build & sound quality. They are also widely used by amateur trombonists. The professional Vincent Bach Trombones are their Stradivarius (Strad) models. These include models 12 & 16 medium bore trombones, 36 medium large bore & 42 large bore trombones. Bach Stradivarius Bass Trombones are also available.