The Sonar Global Beat Alto Glockenspiel has a resonator box made of pine. The matched steel metal bars that have a range of C2 to A3. Each bar is stamped with its note value. Includes a pair of wooden mallets.Type: alto Series: Global Beat Product: AG GB Tonal range: c2 to a3 Number of bars: 16 Tones: c2, d2, e2, f2, f-sharp2, g2, a2, b-flat2, b2, c3, d3, e3, f3, f-sharp3, g3, a3 Scale: C major scale Sound bar material: Steel Sound bar color: silver Sound bar width: 20 mm Sound bars thickness: 3 mm Tuning: standard tuning Resonator box: made of pine wood Mallets: 1 pairs SCH 40