Introducing the R8 Plus(TM). Dial in the perfect amount of deep tissue massage force with the adjustment dial. With a Patented integrated mechanism hidden in the frame, the R8 Plus(TM) is designed to be easy to use, reliable, and built with the highest quality of materials. Use the adjustment dial to reduce or increase the force as needed for the perfect feel. The R8 Plus(TM) targets the IT-bands, quads, hamstrings, calves, shins, gluteus, arms and more. Features: Adjustable deep-tissue massage force for personalized relief Improves circulation and helps reduce inflammation Breaks up muscle adhesions for effective myofascial release Constructed with high-quality, durable materials FDA Registered Medical Device #D229174