The Sonor Soprano Diatonic Glockenspiel features a tough plastic resonator box with a soft design shape that really appeals to kids. This SONOR glockenspiel produces a vibrant, bright tone. Special alloy steel bars ring right on pitch. Includes a set of ball-end mallets. 13 bars, key of C, from C3 to F4, plus F#3 and Bb3 bars.