R8 Plus Deep Tissue Muscle Roller Introducing the R8 Plus. Roll Recovery took everything they learned over the years and designed the next evolution of R8. Dial in the perfect amount of deep tissue massage force with the adjustment dial. With a Patented integrated mechanism hidden in the frame we designed the R8 Plus 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. An FDA Register