Dynamic Flex Handle - Rush Gold bats utilize a Dynamic Flex handle which is 50% stiffer than prior models while still providing significant whip action during the swing. This handle flex accelerates bat head speed to levels optimal for use with Liquidmetal Gold Barrel Technology. Low Rider 105 - Rush Gold features a completely new, ultra-tough, end plug. Extensive testing has shown this end plug to withstand direct impacts up to 105 miles per hour. In addition, the new Low Rider profile reduces damage due to miss-hits off the end. 15% more Liquidmetal - New formula for even greater Pure Energy Transfer. Precision balanced even with more Liquidmetal and still industry leading balance for great bat speed. 2 5/8" barrel, -3 oz.