Features1Promotes Relaxation: Tuning forks can promote relaxation, and tuning fork therapy helps induce a deeper state of relaxed thoughts. 2Easy Operation: The resonant tuning fork can be used as a crystal energy cleanser, a good sound therapy instrument, easy to carry and operate. 3Smooth Edge: The edge of the resonance tuning fork is round and smooth without burrs, so you don't have to worry about scratching your hands. 4Improves Clarity: Tuning fork therapy helps improve metal clarity, concentration and cognitive function, improving physical and mental performance. 5Combined Use: Tuning forks can increase the effectiveness of alternative therapies, and tuning fork therapy can be combined with meditation, massage therapy, and acupressure.SpecificationItem Type: Tuning ForkMaterial: Aluminum alloy + beech woodTuning Fork Frequency:174Hz tuning fork285Hz tuning fork396Hz tuning fork417Hz tuning fork528Hz tuning fork639Hz tuning fork741Hz tuning fork852Hz tuning fork963Hz tuning forkPackage List9 x Tuning Forks 1 x Hammer 1 x Storage Bag