Big Bertha B-21 Hybrids are built for distance any way you swing it. They create fast ball speeds across an expansive area in each model and loft, with our advanced A.I.-designed Flash Face. Weve added more offset to help reduce your slice or big miss. This increased offset helps to promote a straighter ball flight for more distance. Fast ball speed also comes from two internal Jailbreak bars that connect the sole and crown, so the face can take on more of the load at impact. Features a completely new RCH shaft, designed by Callaway to specifically enhance the Big Bertha offering, with an Active Tip Flag section for easy launch. The Big Bertha B-21 Hybrid is built for the players who want to unlock their inner distance with a total forgiveness package. This is our easiest to launch hybrid with a larger head volume, and its designed to help you get rid of the big miss that spins off line. When you hit it straighter, you hit it longerits just that simple.