1、[Alloy Tuning Fork Set] This tuning fork set is made of aluminum alloy, sturdy and anti corrosive, offering durability, providing clear tones, long lasting sound, and accurate frequencies. 2、[Comprehensive Frequency Range] The set includes 9 tuning forks spanning UT 396Hz, SOL 741Hz, MI 528Hz, F963Hz, LA 852Hz, FA639Hz, F285Hz, RE417Hz, and F174Hz. 3、[Healing Tool] Perfect for balancing energy centers, enhancing attention, purifying the body and mind, as well as playing with pets and performing music. 4、[Versatile Usage] Widely used for voice healing, meditation, anxiety relief, etc. Can also determine the speed of sound and verify the conduction of sound waves. 5、[Convenient Accessories] Featuring a silicone hammer and a wooden stand, providing convenience for use and storage, enhancing your healing and meditation experience.