The whole school will hear and want to know the source of such an ear-piercing sound. Contains rods and tubes of varying lengths and thicknesses and resonance powder. Rod lengths are as follows:
70cm length, 1cm dia, solid
70cm, 1cm dia, hollow
70cm, 1.2cm dia, solid
76cm, 1.2cm dia, solid
100cm, 1.2cm dia, solid
