Improve hand speed, accuracy, reaction time, rhythm and coordination using the UFC PU double end reaction ball. This 8” (20cm) double end bag is great for reflex training and has a tough and durable polyurethane construction with reinforced stitching to withstand a real beating. The reaction ball provides fast rebound to help you increase speed and train you to miss the punches. It’s perfect for developing hand-eye coordination and features riveted straps and strong D-rings on both ends to facilitate quick and easy mounting.