Crafted from high-quality aluminum alloy, ensuring durability and stable pitch even after extensive use.Includes four core tuning forks at frequencies of 128Hz, 256Hz, 512Hz, and 528Hz for versatile sound healing applications.Adjustable frequency with removable wheels on the 128Hz fork, allowing for customization and fine-tuning.Ideal for professional therapy, everyday relaxation, and various holistic practices such as meditation and yoga.Tested for 1,000 strokes to maintain performance and eliminate distortion common with ordinary metal tuning forks.This tuning fork set is designed to relieve stress and anxiety through precise vibrations, making it suitable for both professional therapists and individuals seeking relaxation. The forks can be used in music, healing, and ear cleaning, and are compatible with alternative therapies like acupuncture and breathing exercises.Color: SilverMaterial: Aluminum AlloyPackage Contents:4 x Tuning Forks1 x Tuning Forks Activator2 x hammer1 x cleaning cloth1 x wrench1 x pu Bag1 x triangle block