This is an excellent "tsubo-oshi" (acupressure) product that can pinpoint and stimulate hard-to-reach areas like the shoulder blades, back, and neck. ● Made of sturdy steel. ● The flexibility of the arm allows for adjustable pressure. ● Comfortably stimulates muscle stiffness at specific points. ● Easy-to-grip handle. ● Easily reaches the back. We also offer a great value set of 2. Please take a look!