Big Bertha is one of the most iconic names in golf, providing game-changing performance and making the game more fun for players of all abilities. The new Big Bertha family is precisely engineered for players who want to launch the ball higher and play with more confidence every time they tee it up. This extremely forgiving line-up is designed to make every shot your best. For players who are seeking an iron that is easy to hit with outstanding ball speed, Callaway's Big Bertha irons promote outstanding forgiveness in a generous, confidence-inspiring shape. Using cutting edge A.I. technology and premium performance materials such as tungsten technologies like tungsten, these irons are engineered to deliver easy distance and powerful iron shots, even on off-centre hits. Precision tungsten is used in two ways to improve launch and control. Up to 11g of external tungsten is positioned to promote outstanding forgiveness. And up to 43g of internal tungsten is positioned to create high-launching long irons and easy-to-control short irons. A high-strength face cup uses A.I. to optimise speed and spin across the face. Each head throughout the set features a unique A.I. pattern to enhance performance. Callaway's classic Big Bertha shape has been refined to inspire confidence at address. Each iron is designed with thicker toplines, wider soles, enhanced offset, and longer blade lengths to create forgiveness and a straight ball flight. Fitted as standard with the True Temper Elevate MPH 85 shaft and the Callaway Universal grip.