[Tuning Fork Set] The therapeutic tuning fork is machined from aluminum alloy, precisely tuned to within 0.5% of the specified frequency, and produces a clear, long-lasting tone that resonates deeply, promoting relaxation and overall well-being. [128Hz Tuning Fork] (weighted) suitable for hearing tests, neurological assessments, and relaxation. May be used to support muscle, joint, and nerve health through resonance. Can be held near the ears for deep relaxation. [136.1Hz Tuning Fork] (weighted) designed for meditation and relaxation. Can be applied near the ears or on joints, muscles, and body areas to help release tension. Suitable for use on knees and feet. [528Hz Tuning Fork] (weighted) known for its calming effect on the mind and body. Supports energy flow and may contribute to nervous, immune, and circulatory system function. [4096Hz Tuning Fork] High-frequency tuning fork intended for mental clarity and focus. Can be used near the ear or in space to promote a sense of openness and relaxation. Color: Silver Material: Aluminum alloy Package Contents: 2 x mallets (color and style may vary) 4 x tuning forks 1 x small wrench Note: Light and display settings may cause slight color variations. Measurement error is +/- 1-3 cm.