Make practice more powerful, slide the Easton(R) 5 oz. Speed Weight onto any bat and see improved results in your bat speed and power through the strike zone. Product Features: Part of the Hit Lab(TM) Collection, a full-line of training aids designed to maximize performance Helps improve bat speed and quickness with your hands Slides easily onto any bat Designed for live hitting Additional Information: Weight: 5 oz. Model: A153019 Easton