Vertically or obliquely up to 1.5 cun.
As the meeting point of the three Yang Channel of the arm, Sanyangluo TB-8 is widely used to open these Channels by removing the Obstruction. Therefore, it is able to ease pain, stiffness or contractions in the arm, shoulder, elbow, neck, occiput or fingers. It also relaxes the sinews and tendons of the arm.
Furthermore, it benefits the throat and voice.