The tuning fork set is made of high-quality aluminum alloy material, with fine workmanship and high precision. Aluminum alloy construction offers dependable, solid strength. The resonance box is made of high-quality wood. The tuning fork is placed on this wooden box, which has an amplification effect. The sound quality is balanced, providing a profound and stable resonance, with a natural and comfortable listening experience. This set is suitable for yoga, spa, aromatherapy, tuning fork resonance teaching, hearing tests, meditation, and other applications. Color: Silver & Wood Color Material: Wood + Aluminum Alloy Size: Resonant Box: Approximately 18 cm in length Package Contents: 1 x Tuning Fork 1 x Resonant Box 1 x Hammer Note: The package includes only the items listed above. Note: Due to light reflection and differences in display screens, the color of the item in the picture may vary slightly from the actual product. Measurement error allowance is +/- 1-3 cm.