2 5/8 barrel. EXACT Carbon –Engineering x Advanced Carbon Technology 1-piece construction provides better feeling in the hands and optimized barrel performance New SPEEDCAP provides a more flexible and responsive barrel while also enhancing the sound of the bat 1-piece HYPERLITE balanced design provides a lightweight swing weight for more speed behind the ball at contact Custom LIZARD SKINS DSP bat grip provides the ultimate feel, cushion and tack.