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
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