The Callaway Big Bertha Fusion irons use weight placement technology to improve launch conditions and performance for golfers of all abilities. The multi-material construction includes a Tunite alloy cradle with a Thermoplastic Urethane (TPU) insert combined with a 6-4 titanium face.This titanium face results in faster ball speeds, the cradle moves weight to the perimeter and the insert improves stability at impact for a better feel and sound.
