[ Aluminum Alloy Material]C128, C512, C256 tuning forks are made of aluminum alloy materials, with clear sound, corrosion resistance,non-magnetic and no rust.It is very suitable for home, medical school or clinical use. [Perfect Effect]The tuning forks for healing has excellent performance and consistent frequency accuracy. It is very suitable for repair and healing, relieve stress and pain, purify the body and mind, and improve concentration. It is also very suitable for meditation or yoga. [ & Easy to Use]The chakra tuning fork set has an extra-long turned smooth aluminum handle, which can be tested for bone conduction and is easy to use. It is made of durable but materials and is comfortable to hold. It is equipped with a flannel bag for easy outing. [Gifts for Spiritual People]Tuning fork and reflex hammer is the for the upcoming holiday! Intimate gifts for women, health gifts for women, for men, gifts for Buddhists, gifts for yoga teachers, and gifts for spiritual souls or meditation lovers. size: 20.32 x 5.08 x 3.81 cm Material:Aluminum alloy + wood colour:Silver + Black Package Contents: 3 x Tuning Fork(128Hz, 256Hz, 512Hz) 1 x Striking Mallet 1 x small wrench Only the above package content, other products are not included. Note: Light 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.