Material: Bronze Alloy(80% Copper 20% Tin) Size available: 27cm(treble） 28cm（bass）... 

Material: Bronze Alloy(80% Copper 20% Tin) Size available: 15cm 18.5cm... 

Material: Bronze Alloy(80% Copper 20% Tin) Size available: 18cm-50cm... 

Material: Bronze Alloy(80% Copper 20% Tin) Size available: 30cm-65cm... 

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