[Aluminum Alloy] Lightweight and high strength, easy to carry, maintains stable temperature, long service life, non-magnetic, provides pure and stable sound quality with 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, helps relieve stress, supports emotional balance, and aids in yoga and meditation practices. [Extra Long Handle and Two Sound Activators] The extended handle allows for easy handling and reduces user fatigue. The included activators enhance the amplitude and duration of vibrations, delivering a more consistent and sustained sound output. [Gift] Featuring a unique design and rich sound quality, this set is a valuable tool for musicians, medical practitioners, yoga instructors, and meditation enthusiasts seeking relaxation and therapeutic benefits. Color: Silver & Black Material: Aluminum Alloy Package Contents: 4 x Tuning Forks (128Hz, 136.1Hz, 256Hz, 384Hz), 1 x Tuning Fork Activator, 1 x Wrench, 1 x Cleaning Cloth, 1 x Hammer (colors and styles may vary, no specific selection available) Note: The package includes only the items listed above. Light reflection and display differences may cause slight variations in color between the image and the actual product. Measurement error allowance is +/- 1-3 cm.