Acuforce® Massagers and accessories. Uses it's own weight (2.5 lbs.) in applying pressure. Saves thumbs, wrists and elbows from fatigue and injury. Performs muscle stripping, cross-fiber friction and trigger point therapy. Works well with lotions. Highly effective cryo-therapy. 3 pound unit forms a large ice surface under the tool to perform long-lasting therapy. Weight of the tool removes the need to apply pressure during treatment.