Vinyl Coated Cast Iron Imported Orange; 12 ounces DURABLE: Vinyl Coated Cast Iron Donut-Style bat weights are tough and won't damage bats when properly used WEIGHTED: PowerSwing Donut Bat Weights are color-coordinated according to their respective weights WARMUP & TRAINING: Great, simple, and effective tool to build bat speed and arm strength and for warming up prior to stepping in the batter's box ALL-LEVELS WELCOME: Powerswing bat weights range in weights from 4 to 28 ounces. Gradually build strength and competency according to your level; from youth ballplayers to players with biceps bigger than most youth ballplayers