The Knuckle-Baller takes the power of the Omni Directional Massage Ball to a whole new level. The "Sure Grip" handle and FOUR Omni Directional Massage Balls enable you to deliver the wonderful healing power of massage with ease and comfort. The Knuckle-Baller is an outstanding aid in the application of many techniques including Swedish, Deep Tissue, Sports Massage, Trigger Point, Reflexology and Cellulite Reduction.