Callaway have gone in a totally new direction when it comes to clubface design. Their new Epic Flash fairway woods have been designed with the help of computer programming. The use of Artificial Intelligence and machine learning has allowed the face technology to develop well beyond what humans would be able to do. The Flash Face shows a subtle wave design that allows for increased ball speed at the moment the ball strikes the face to give increased distance. The face itself is made from forged 455 Carpenter steel.