Hayabusa Double End BagPrecision Training Size Effortless Setup Heightens Reflexes Double End Ball A fast, elusive, and addictive training tool that puts your reflexes to the test. The Hayabusa Double End Ball is equipped with lightweight shock cords and a miniature rebound ball designed to challenge your punch accuracy, speed, & timing. Fully adjustable from top to bottom, with a quick and easy setup that takes only minutes. The small footprint makes the Double End Ball an