Check the listing for details. KRATO Hitting Power Balls | Youth Plyo Ball with Seams | Weighted Baseballs. Condition: New. Listed at 49.00 USD. KRATO Hitting Power Balls 10 oz set of 6 DRIVE THROUGH THE BALLWeighted baseballs designed for hitting! This seamed heavy 10oz balls replicated a real baseball. Learn to power through the zone.The only seamed weighted ball for hitters! Hitting with Power Balls promotes hitting the baseball hard and driving through the zone. Krato weighted balls are a must-have for any hitter looking to increase their exit velocity and power at the plate. Practice hitting with a heavier ball teaches the hitter to drive through the ball while utilizing the full body. When switching back to a regular baseball, players continue to drive through the ball hitting it with increased exit velocity and distance.Includes a convenient nylon carry bag and an air nozzle to inflate as needed using a standard needle pump.