Rhythm Band RB2012 The Artist series chromatic meoldy bells are the finest quality bell sets available today. The bells feature 1-1/4 x 1/8 bars that are perfectly tuned electronically and are made of a bell metal alloy especially created for Rhythm Band Instruments. This bell metal has enormous carrying power with remarkable resonance. Each bell has its own individual acoustic mount securely connected to one-half inch resonator frame