Weighted Cricket BallsA must have for all bowlers. The weighted balls increase arm speed and strength. Fast bowlers these balls help with strengthening your shoulder, improving arm speed, also improve grip and finders and also core strength. Spin bowlers these balls help with your shoulder, strengthening your wrist and finger and also core strength. Box of 3 balls in different weights: 180oz 220oz 260oz These balls are not for batters.