[Aluminum Alloy] Lightweight and high strength, easy to carry, maintains stable temperature, long service life, non-magnetic, pure and stable sound quality, accurate frequency response for use in various applications. [Multi-purpose Tuning Fork for Healing] Suitable for musical instrument tuning, music education, medical applications, and sound therapy. Promotes deep relaxation, enhances concentration and cognitive function, relieves stress, regulates emotions, and supports yoga and meditation practices. [Extra Long Handle and Two Sound Activators] The extended handle allows for easy handling and reduces user fatigue. The activators enhance the amplitude and duration of the tuning fork's vibrations, delivering a more consistent and sustained sound. [Gift] Featuring a unique design and high-quality sound, this set is a valuable tool for musicians, medical professionals, and yoga and meditation enthusiasts seeking relaxation and spiritual well-being. Color: Silver & Black Material: Aluminum Alloy Package Contents: 4 x Tuning Fork (128Hz, 136.1Hz, 256Hz, 384Hz), 1 x Tuning Fork Activator, 1 x Wrench, 1 x Cleaning Cloth, 1 x Hammer (colors and styles are random; no specific selection available) Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual product. Measurement error allowance: +/- 1-3 cm. Only the listed items are included; additional products are not part of the package.