The AcuForce 7.0 is specifically designed to use it's own weight (7 lbs.) in applying pressure during your therapy treatments. This saves your thumbs, wrists and elbows from fatigue and injury. The AcuForce 7.0 performs muscle stripping, cross- fiber friction and trigger point therapy. The tool is made with a special skin-like material that works incredibly well with lotions and oils. Colors vary.