1. The 32 tuning fork is a weighted tuning fork used along the skin to regenerate and stimulate nerve. It also enhances meditation practices. 2. The 48 tuning fork with soothing sound & vibration has calming effect on the body, mind and emotions & stimulates the cranial sacral pulse. 3. The 64 tuning fork is used primarily on the lower back and hips for easing pain and stimulating the parasympathetic nervous system. 4. The 128 tuning fork promotes the release of nitric oxide, a gas in our blood vessels known to relieve joint pain and promotes relaxation and health. 5. The (osteophonic) tuners are placed by the ears and on joints, muscle and nerve groups which in turn resonate throughout the body providing relief from arthritis, knee or back pain, surgery or a strenuous workout. 6. tuning forks have a weight atop each prong. Colour:As Shown Material:Metal Notes: 1. To keep the tuning fork more accurate, please do not tap it with metal. 2. Please keep the wooden dry and away from sunshine before and after use. Please check as much as possible to make sure the item is what you need. Due to different product batches, the appearance , which does not affect the use Accessories color random, don't accept the specified color Package Contents: 4 * tuning fork 1 * hammer Only the above package content, other products are not included. Note: Light reflection 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.