Ball speed and forgiveness are enhanced in the Big Bertha OS iron set with an Exo-Cage and next generation 360 Face Cup. The Exo-Cage is light and strong, allowing the weight to be shifted to positions in the head that help forgiveness. The 360 Face Cup increases ball speed and distance on shots hit all over the face.
Callaway increases the launch angle in the Big Bertha OS iron set by placing a “Tungsten-Loaded Standing Wave” in the sole of the club. The weight lowers CG and raises launch.
The Big Bertha OS iron set also has a progressive CG throughout the set. The CG location lowers in each club as the loft lowers. This gives longer irons higher launch so they can carry longer and land softer.
Read more about the Big Bertha OS iron set here.