Hegu acupressure rings are a patented device that consists of two stainless steel rings that stimulate the acupressure point known as Hegu. Hegu is the master point of the head and face and has been used for thousands of years to effectively treat head pain. Hegu is found on the back of each hand, near the v-shaped junction of the thumb and index finger. Hegu acupressure rings are a pill free alternative for headaches.