Usage Tips:[ Aluminum Alloy]Light weight and high strength, easy to carry, maintains stable temperature, long service life, non-magnetic, pure and stable sound quality, accurate frequency can be used in many areas [Multi-purpose tuning fork for Healing]Can be used for musical inst ent tuning, music teaching, medical treatment, sound therapy. Promotes deep relaxation, enhances concentration and cognitive function, relieves stress and regulates emotions, facilitates yoga and meditation. [Extra long handle and two sound activators]The extra long handle is easy to maneuver and reduces fatigue during use. The activators also increase the amplitude and duration of the tuning fork's vibrations, ensuring a more consistent and long-lasting sound. [ gift]with unique design and sound charm, musician's right-hand man, practical medical value for medical practitioners, yoga and meditation enthusiasts to get spiritual healing and relaxation Colour: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 specified colors and styles are accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.