ETB102 Eldon Bb Trombone Outfit Eldon ETB102 Student Bb Trombone yellow brass with clear lacquer outfit . Mouthpiece included, and the outfit includes dual protected collegiate case with shoulder and backpack straps. Two piece bell generates even bell vibrations; nickel silver inner and outer slides; medium bore increases free blowing. Beautiful horn, great value, and can be used by students from beginner well into college. An inexpensive horn to begin and get through the early development years, but is of high quality to meet all of your or your student's needs throughout high school.