The Callaway® men's Big Bertha irons are built with 360 Face Cup technology -- previously seen only in woods and hybrids -- which delivers higher ball speed without sacrificing control. The modern, progressive topline and progressive sole widths deliver playability across the entire set, and the center of gravity is optimally located for easy launch. Watch out: you might just find yourself playing 2 clubs longer than you expect!
360 Face Cup technology for higher ball speed all across the face
Hollow body construction with Internal Standing Wave creates low CG for playability
More flexible face for speed and forgiveness
Progressive sole designs are wider in the long irons and narrow in the short irons
Modern, progressive topline
True Temper® Speed Step 80 steel shaft with low torque and low kickpoint; regular or stiff flex