DeMarini Insane -12oz Little League Bat, Size is 30 /18oz. Made in the USA, these one-piece performance sticks are forged from DeMarini's own SC4 Alloy and Thickness Tuned to provide the ultimate in performance and feel. Designed for balance and swing speed, they are a deviation from the normal Half & Half design DeMarini is renowned for, with all the bad attitude and power you would expect from the leader in cutting-edge performance bats. The Low Profile D Cap is scientifically tuned to absorb vibration while maximizing power and keeping swing weight low. 12 Month Limited Warranty. All return and warranty issues must go thru Wilson Sports. 800-937-BATS.