Feature:100% brand new and high quality.Made of high-grade aluminum alloy materials, durable and quality.This tuning fork is designed for medical diagnostic. Offers accurate frequency response. Frequency: C64Hz (Dampers cannot be moved).It can be applied in clinic, health club and so on.Applicable for: DiabetesToxic nerve damage (Etoh, heavy metals)Immune-mediated neuropathy (AIDP/Gullian Barre, CIDP)B12 deficiency/subacute combined degenerationTabes dorsalis(Please note that the diagnosis of neuropathy or other conditions listed above is performed only through the consultation of a qualified specialist). Installation: This tuning fork produces vibrations: cannot move the damper and can only emit 64hz vibrationSpecification:Item Type: Tuning ForkMaterial: Aluminium AlloyFrequency: C64Hz (Cannot move the damper)Tuning Fork Size: Approx. 26 x 2 cm / 10.2 x 0.8 inch Weight: Approx. 115 gPacking Include:1 x Tuning Fork.Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.