Usage Tips: [Aluminum Alloy] Lightweight and high strength, easy to carry, maintains stable temperature, long service life, non-magnetic, pure and stable sound quality, accurate frequency suitable for various applications. [Multi-purpose tuning fork for healing] Can be used for musical instrument tuning, music teaching, 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 extra long handle allows for easy maneuvering and reduces user fatigue. The activators increase the amplitude and duration of the tuning fork's vibrations, delivering a more consistent and long-lasting sound. [Gift] Features a unique design and high sound quality, ideal for musicians, medical practitioners, and yoga and meditation enthusiasts seeking relaxation and wellness support. 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 are random, no specific selection available) Only the above items are included; other products are not included. Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement error allowance is +/- 1-3 cm.