The Primary Line FSC Alto Glockenspiel features 16 steel bars and a birch resonator box. The note range is C2 to A3 with two F-sharp and one B-flat bar included. The Glockenspiel is an excellent tool for elementary school music education. Comes with a pair of SCH 95 mallets. Primary Line offers the most Orff (tone bar) instruments manufactured of wood from FSC (Forest Stewartship Council) certified forests – at no additional charge! All FSC models perfectly complement the pitch, timbre, and intonation of existing Primary Line models.