Sturdy construction so it won't break easily Provides great sound any time It is even teacher approvedTONECHIME 7 NOTE BASS BAR SET w/ CASE: Expand your 4 octave set on the low end of the range w/ our new 7 note bass bar set. Complete w/ heavy duty travel case. Range C3 to F#3.7 Note Bass Bar Set. Most Innovative: Precision crafted from fine lightweight aluminum, Suzuki Tone Chimes have adjustable clapper heads for variable expression and overtone tuning for perfect harmonics. Beautiful, yet cost effective ways to share the music. Most Comfortable: Only Suzuki Tone Chimes feature tubular bells w/ rounded tone chambers. They're easy to hold and easy to play for extended periods. Most Affordable: Bring the beauty of hand bell playing to your school, church or musical ensemble w/ the music industry's lowest cost Chimes available today. Don't pay more! Most Expandable: Start w/ our affordable 2 octave, 25 note set. Add sets as your experience level increases. 3rd octave, 4th octave and new 7 note bass bar add on sets put on a spectacular show! Most Convenient: Rugged, heavy duty padded travel cases (models HB-25, 12A, 12B, 7C). Tone Chime cases are both beautiful and functional.