Nerve Forks are tuned to 50 Hz. They are also called Bone Forks, and they work on both nerves and bones. An old veterinarian told me years ago when he was caring for an animal with a broken bone, he would put it in a room full of cats. Purring cats emit this frequency and thus help mend broken bones. It is also good for strains and sprains, tired nerves, muscle knots, and nerve pain.
All of our high quality tuning forks are Made in the USA. Each fork is triple tuned for accuracy of +/- .25% Hz. A protective velvet pouch is included.