The G1L is a versatile model that allows the performer to execute a large diversity of literature from the orchestral, chamber and solo performance repertoire with greater ease and efficiency. Unless specified, this model is built with a #5 bell in both`G' and `F'. Includes 2 bells and 2 sets of tuning slide for G and F tunings. • M Bore - (.450"/11.42mm) • M Bell - (4.375"/111.13mm) Yellow Brass Tuning Bell with #5 Taper in G • M Bell - (4.375"/111.13mm) Yell...