Callaway Women's Big Bertha Individual Hybrid Club Speed Frame Face: Where the fast ball speed comes from; It's thin, light and robust so that it's fast all across the face The CG is low and forgiving, and by doing this we can offer up the full package of high MOI for maximum forgiveness and ball speed OptiFit Adjustability: Adjustability at its finest, with an adjustable hosel lets you choose from a combination of 8 different loft and lie angles Now this is how you find your optimized trajectory and shot shape