Yamaha YG1210 2 1/2 Octave Concert Bells High carbon steel material with a special tempering process For a pure, bright tone.Deeper frame and case Provides resonating chamber.Full F57 to C88 range Satisfies more repertoire requirements.Nodal point support string with single pin bar mounting Increase sustain and maximize resonance.Easy on/off lid hinge Packing is efficient through the use of easy on/off lid hinge.