About This Improve Grip: Callus ball’s pores create squeezing without scraping skin, boosting skin toughness and grip friction for rock climbing grip trainer use Build Tougher Skin: Callus ball for hand is designed for skin conditioning and grip training, ideal for moon ball and moon grip ball users seeking tougher skin Enhance Friction: Moon grip ball and climbing grip trainer enhance friction for athletes, climbers, lifters, martial artists. These calus ball, callous ball improve hand feel and control Grip Training & Stress Relief: Ergonomic moon balls provide satisfying squeeze, relieve hand fatigue, strengthen grip muscles. Ideal climbing grip trainer and moon rock for stress relief Different Intensity Levels: Callus ball set includes 3 sizes (1.2", 1.6", 2") with varying pore patterns. Each moon ball offers unique intensity for progressive grip strengthening Overview Color : Black Material : volcanic rock Brand : DAWZMR Style : Classic Tension Level : Medium
