Combat B1SL2 B1 Da Bomb Senior League Baseball Bat (-8) - New for 2010! The bat's single wall composite construction allows for longer barrel lengths and lighter bats, resulting in maximum allowable performance. The -8 oz. drop bat is optimized for durability and performance, with ultra-long barrels for bigger players. The bat's technology is designed for a soft feel in a senior league compisite bat. The barrel is 2 5/8" in diameter. The Senior League bat's length is 30", weighs 22 oz., and has a 10" barrel length.