Markwort PowerSwing Bat Weights, Navy Blue ,4oz
4 oz. Navy Blue
Cast iron bat weights are color-coordinated according to their respective weight.
Great, simple, and effective tool to build bat speed and for warming up prior to stepping in the batter's box.
Use for training to increase your bat speed
 
We have been training hitters in overload/underload training for 20+ years. We find that most bat weights are too heavy to help. These 4 oz. weights are just right for overload training.