CallawayCallaway Left Handed Big Bertha B21 Individual Graphite Irons

It all starts with the confidence-inspiring shaping that makes Bertha so easy to hit. Generous offset, wide soles and a thick top line inspire confidence. But there is even more under the hood.

This is the first time that Callaway's A.I.-designed Flash Face Cup is in a Big Bertha Iron. They have created high balls speeds and increased spin robustness off of every club in the set, with a unique Flash Face architecture for each individual iron.

A.I. Flash Face Cup wasn't the only first these irons also have a Visible Tungsten Energy Core (VTEC) which deepens the CG to make these irons incredibly easy to launch. Callaway has also provided outstanding feel at impact from their proprietary urethane microspheres. These microspheres are strategically designed to absorb unwanted vibration without reducing speed. In short, your getting the iconic shaping that you want to see over the ball with incredible ball speed technologies to get the absolute most out of your swing.

Fast Ball Speeds From The First A.I.-Designed Big Bertha Iron 

Callaway's industry-leading Flash Face Cup in each club. They have created high ball speeds and increased spin robustness off of every iron in the set with a sophisticated face architecture that’s unique to every loft. Ball speed is further enhanced by the 360 Face Cup that flexes and releases at impact.

Amazing Forgiveness From Legendary Big Bertha Shaping 

This club profile that golfers love is engineered to give you more confidence over the ball with noticeably wider soles. For easy launch, lower spin and straighter shots, Callaway has added more offset. Combined with their Flash Face Cup, they’ve developed a NEW formula for distance and forgiveness. 

Higher Launch From Our Visible Tungsten Energy Core 

Callaway has added a significant amount of custom tungsten weighting enabling them to deepen the CG in each iron with extraordinary precision, while still maintaining ball speed in the Flash Face Cup. Now you can get higher launch conditions through the set. 

Pure Feel From Urethane Microspheres

Callaway's patented urethane microspheres comprehensively absorb unwanted vibration for exceptional feel, while also maintaining fast ball speeds.