This is the first Big Bertha iron designed Using Artificial Intelligence Technology. These Irons are designed with Callaway Golf`s Big Bertha shaping with a NEW formula for distance and forgiveness. The Big Bertha Irons deliver more ball speed, higher launch and straighter shots for a new level of confidence.

The Big Bertha B21 Irons Feature:

- A.I. Flash Face Cup
- Tungsten Energy Core
- Big Bertha Shaping / Urethane Microspheres
-2-Year Guarantee / KBS MAX CT80 Steel Shafts / Tour Velvet 360 Grips

A.I. Flash Face Cup

The Big Betha face architecture has been developed with A.I which is unique to each individual iron. The irons feature increased ball speed and spin rates with Callaway`s 360 Face Cup technology which flexes and releases at impact.

Visible Tungsten Energy Core

The irons have a Visible Tungsten Energy Cor fused into the construction. In a deeper positioned to lower the CG in each iron for higher launch while still maintaining ball speed.

Urethane Microspheres

The irons are designed with an extremely soft feel thanks to over one million microspheres are strategically placed into each clubhead to absorb unwanted vibration when striking the ball. The patented urethane microspheres also maximize COR for even more ball speed performance.