[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 facilitates yoga and meditation practices [Extra long handle and two sound activators] The extended handle allows for easier 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 output [Gift] Featuring a unique design and exceptional 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 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) Only the above items are included; other items are not part of this package Note: Lighting effects and display settings may cause slight variations in color between the image and the actual product. Measurement tolerance is +/- 1-3 cm